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Author
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Topic: Proform Holley Carb Bodies
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Just Jim
Gearhead Posts: 381
From: So Cal
Registered: Feb 2000
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posted 11-27-2001 09:13 PM
 
Are those 750 CFM Proform carb bodies for real or just hype. According to their info,you just take all the parts off an existing carb and bolt them on the new main body and gain 25-50 HP. They do look similar to the Holley HP series of carbs,but not too sure to believe that they are as good as they say.------------------
"Just Falcon Around"
1962 Falcon 351W
1958 Morris Minor 289
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clevelandstyle
Gearhead Posts: 1558
From: central Indiana
Registered: Jul 2001
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posted 11-27-2001 09:36 PM
I have a hard time believing that you'll get 25-50HP. I'm sure that they will flow better than a stock Holley body, but that sounds like a pretty big improvement. I've seen those on sale now for $99.00. I'll bet almost anyone on this sight would pay $99.00 for a 25-50HP improvement, but it just sounds to good to be true.
Don't get me wrong, I'm not saying that it's not a step up from a standard Holley. Just don't be upset if you don't get the big gains.
Just my opinion.
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70coupe
Gearhead Posts: 493
From: Toronto,Ontario,Canada
Registered: Aug 2000
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posted 11-27-2001 10:34 PM
I'm not saying you'll get the gains either but I have heard good things about the main bodies! One guy at the track said he gained 4 tenths, from low 12's to high 11's. Someone out there must have some hard evidence? I think I might buy one as well.
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Just Jim
Gearhead Posts: 381
From: So Cal
Registered: Feb 2000
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posted 11-27-2001 10:43 PM
Being sceptical I haven't bought one either. $99 for 25 HP or 4 tenths at the track would be a bargin tho.------------------
"Just Falcon Around"
1962 Falcon 351W
1958 Morris Minor 289
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Rory McNeil
Gearhead Posts: 1889
From: Surrey, B.C. Canada
Registered: Nov 2000
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posted 11-28-2001 03:50 AM
Sounds pretty hard to believe a simple main body change could help that much.------------------
78 Fairmont 428 4 speed 10.20@130mph
80 Fairmont 302 5 speed 12.8@105mph
85 Mustang NHRA Stocker under construction, 302 5 speed
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n2oMike
Gearhead Posts: 3058
From: Spencer, WV
Registered: Jan 2001
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posted 11-28-2001 09:58 AM
A guy on another list talked with Braswel Carburetion, and noted that they use them on anything that doesn't require a Holley part number. Another mentioned he went from 124 to 126mph after the switch. ------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
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kcode
Gearhead Posts: 3415
From: alvaton,ky,usa Suburb of Bowling Green, M&M #79, MCA #29208
Registered: Jun 99
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posted 11-28-2001 01:14 PM
The carb on my 347 is made by Quick Fuel Technology, 3 ex-Holley designers/engineers, they use the Proform body exclusively. This ought to tell you something. The word Holley doesn't appear on the carb any where.www.quickfueltechnology.com Mike [This message has been edited by kcode (edited 11-28-2001).]
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n2oMike
Gearhead Posts: 3058
From: Spencer, WV
Registered: Jan 2001
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posted 11-28-2001 04:37 PM
Here's a little more discussion:http://www.fordmuscle.com/boardpower/discussion.cgi?forum=1&discussion=4966 Good Luck! ------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
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Moneymaker
Administrator Posts: 29200
From: Lyons, IL, USA
Registered: May 99
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posted 11-28-2001 05:25 PM
I am not especially happy wiht some of the Pro Form products that we have had the oppertunity to see. They seem to be in the habit of copying other manufacturers. I have not used their carb body, but a friend at BG tells me that there may be a law suit pending so judge for yourself.  ------------------
Alex Denysenko
Co-Administrator and Moderator
NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00 & '01
Fleet of FoMoCo products
Moneymaker Bio
US Class Nationals link
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clevelandstyle
Gearhead Posts: 1558
From: central Indiana
Registered: Jul 2001
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posted 11-28-2001 05:41 PM
Yeh, I think Barry Grant got sued by Holley for similar stuff. That's another reason why Barry Grant started casting a new design. (Claws and Demons)
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badazzcougar
Gearhead Posts: 132
From: Seattle
Registered: Oct 2001
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posted 11-28-2001 08:02 PM
who's got them for $99 now?
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n2oMike
Gearhead Posts: 3058
From: Spencer, WV
Registered: Jan 2001
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posted 11-28-2001 08:50 PM
Jegs1-800-345-4545 ------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
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clevelandstyle
Gearhead Posts: 1558
From: central Indiana
Registered: Jul 2001
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posted 11-28-2001 11:09 PM
I thought everyone had that number memorized. 
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clevelandstyle
Gearhead Posts: 1558
From: central Indiana
Registered: Jul 2001
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posted 11-29-2001 12:58 PM
Hey, guys. I was just on www.proformparts.com.
They have a $10.00 cash rebate on that carb body. That means you can get it for $99.00 from Jeg's and mail in the proform coupon(available on there web sight) to get the body for $89.00. It's good 'till the end of the year.
Gee.....I might have to think about that.
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cpmaverick
Gearhead Posts: 1669
From: Manhattan Beach, CA
Registered: Jan 2000
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posted 11-29-2001 01:06 PM
Can you convert any size double pumper to a 750 by using that carb body?------------------
-Charlie Ping
1970 Maverick Grabber
[email protected]
Daily Driver
http://www.maverickgrabber.com
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bluestreek
Gearhead Posts: 1724
From: Athens,GA
Registered: Jul 2001
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posted 11-29-2001 02:07 PM
The 67100 body will fit a 650-750.. I think the 650 throttle plate is the same as a 750 so it will turn the 650 into a 750.. They have 67101 version that works really well on a 750 Vac secondary.. This would be the best setup for a street/strip SB Windsor.. in my oppinion.
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Dave_C
Gearhead Posts: 1123
From: Gadsden, Al
Registered: Aug 99
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posted 11-29-2001 06:01 PM
I was considering getting one a while back and converting the 750 dp that I just sold. I called Pro-Form and asked a few questions. The tech guy was helpful. He said that the new main body will flow up to 830 cfm and works with 650, 700 and 750 dp's. He listed three specific part#'s. But he also said that they will work with any dp that has a #72 or #73 stamped on the throttle butterfly blades.I figured that I was already getting close to 800 cfm out of my 750, so I went bigger. Bought a slightly used 950 hp and am very happy with it. As far as the horsepower claims go I would think tat you would gain the most replacing the main body on a 650 (25hp??) then perhaps 15-16 on a 700 and 10-12 on a 750. Later, David Cole [This message has been edited by Dave_C (edited 11-29-2001).]
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capri man
Gearhead Posts: 8777
From: doerun, ga.
Registered: Nov 2000
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posted 12-05-2001 05:11 PM
well i got me one and installed it on my 700 dp. anyone could do it. it starts and runs smoother than it ever has. seems real crisp and responsive. but as they say, the proof is in the pudding, so i will let yall know how it runs sun. night after the races. jegs is out of them. i got mine from
www.southernperformance.com 800-284-3551
they only charge actual shipping and are the same price as jegs. the only thing that bothers me a little is the "made in tiawan" sticker on the side of it!!!!!!------------------
mike r
racing is real
everything else is just a game.
81 capri-7.56 @88mph 1/8
1.56 60 ft. [This message has been edited by capri man (edited 12-05-2001).]
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chips67
Gearhead Posts: 663
From: louisville, ky, usa
Registered: Jul 2001
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posted 12-05-2001 06:57 PM
the fact is that many far east countries get away with carbon copies of american made products, and barry grant was too if he was modifying holleys and calling them "bg" carbs. i doubt a carb body can be worth 25hp....sounds like b.s. to me. dont believe the b.s., look for real world results at your local track, go from there.------------------
67 coupe, 650dp and rpm intake on 5.0 with afr 165 heads, 4 speed, 4.11's.....best so far is [email protected] in 1/8 mile with 1.79 60ft. time.
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badazzcougar
Gearhead Posts: 132
From: Seattle
Registered: Oct 2001
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posted 12-05-2001 07:27 PM
Far eastern countries make copies of American products because American businessmen pay far eastern businessmen to make those copies in their factories to save on labor and regulatory costs. Dont blaim the Far eastern countries. Blame the scumbag American businessmen who ship jobs overseas to maximize their profits.
The 25 HP claim probably comes from an engine that needs extra airflow and is limited by the main body currently on the carb. Go from 650 cfm to 800 cfm on an engine that needed 800 cfm to make its peak HP and thats where your 25 HP comes from.
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capri man
Gearhead Posts: 8777
From: doerun, ga.
Registered: Nov 2000
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posted 12-05-2001 08:32 PM
if i dont pick up any et i wont be disapointed because, damn its pretty!!!!------------------
mike r
racing is real
everything else is just a game.
81 capri-7.56 @88mph 1/8
1.56 60 ft.
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Blu Dawg
Journeyman Posts: 60
From: Texas
Registered: Oct 2001
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posted 12-06-2001 01:00 AM
you guys have to understang something. When you change something as important as that, there is tuning to be done. If someone gained 4 tenths from the proform, they probably had troubles to begin with, or the proform got them closet to the right airfuel ratio.
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capri man
Gearhead Posts: 8777
From: doerun, ga.
Registered: Nov 2000
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posted 12-06-2001 09:48 AM
i agree badazzcougar, "IF" they got that kind of hp gain, they started out with a motor that was really really restricted.
pro-form sounds kinda like something you would buy for your wife at victorias secret!!!!hee hee
we will know the truth sun. night. the only change i made this week was to put the body on my stock 700 dp stuff.------------------
mike r
racing is real
everything else is just a game.
81 capri-7.56 @88mph 1/8
1.56 60 ft.
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badazzcougar
Gearhead Posts: 132
From: Seattle
Registered: Oct 2001
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posted 12-06-2001 07:20 PM
I got mine in the mail today. I'll have my new motor going this weekend. not much of a baseline though but it sure looks nice.
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bluestreek
Gearhead Posts: 1724
From: Athens,GA
Registered: Jul 2001
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posted 12-06-2001 09:24 PM
The downleg boosters, adj. bleeds, and better castings make a lot of difference in how resposive a carb is.. I haven't used the Proforms, but the Holley HP carbs have similar construction and work way better than the standard models..
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capri man
Gearhead Posts: 8777
From: doerun, ga.
Registered: Nov 2000
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posted 12-06-2001 09:51 PM
i hate to ask this in public but what are those 4 little jet looking thingys on the top next to the squirters?------------------
mike r
racing is real
everything else is just a game.
81 capri-7.56 @88mph 1/8
1.56 60 ft.
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Just Jim
Gearhead Posts: 381
From: So Cal
Registered: Feb 2000
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posted 12-06-2001 10:39 PM
I hate to admit that my curiosity got the better of me and I bought one of the Proform bodies and am going to try it out this Saturday. We'll see. Oh yeah, those 4 jet looking things are jets to control the air flow into the metering block.Different sizes are available. They do the same thing as those small holes in a normal carb body.------------------
"Just Falcon Around"
1962 Falcon 351W
1958 Morris Minor 289
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bluestreek
Gearhead Posts: 1724
From: Athens,GA
Registered: Jul 2001
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posted 12-06-2001 11:00 PM
............ 
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capri man
Gearhead Posts: 8777
From: doerun, ga.
Registered: Nov 2000
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posted 12-07-2001 11:26 AM
under what circumstances would you need to change them and do you have to get them from pro-form?? thanks ------------------
mike r
racing is real
everything else is just a game.
81 capri-7.56 @88mph 1/8
1.56 60 ft.
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Just Jim
Gearhead Posts: 381
From: So Cal
Registered: Feb 2000
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posted 12-07-2001 12:45 PM
Mike, Those air jets are actually air "bleeds" and probably are the same as Holley HP carb air bleeds. The only time they would be changed would be if you wanted to fine tune the mixture.The larger the hole size, the leaner the mixture,just the opposite of main jets.I'm going to make some base line runs tomorrow and then swap carbs to see if it makes any difference.It's an 1/8 mile track and my car is set up for 1/4,but I should be able to tell right away if the carb was worth the $99 minus the $10 rebate. Hey,beats Christmas shopping! ------------------
"Just Falcon Around"
1962 Falcon 351W
1958 Morris Minor 289
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capri man
Gearhead Posts: 8777
From: doerun, ga.
Registered: Nov 2000
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posted 12-07-2001 01:55 PM
thanks, i hope to have some news to post sun. nite one way or the other. hey maybe pro-form should be paying us for this testing. (it might make my results a little better! hee hee)------------------
mike r
racing is real
everything else is just a game.
81 capri-7.56 @88mph 1/8
1.56 60 ft.
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capri man
Gearhead Posts: 8777
From: doerun, ga.
Registered: Nov 2000
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posted 12-08-2001 10:28 PM
hey jim, did you find out any results yet?------------------
mike r
racing is real
everything else is just a game.
81 capri-7.56 @88mph 1/8
1.56 60 ft.
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Just Jim
Gearhead Posts: 381
From: So Cal
Registered: Feb 2000
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posted 12-09-2001 12:34 AM
OK here's the Proform test results:
Run #1 600 1850: 7.95/90.41 with bad 1.921 60 ft
Run #2 750 3310 Proform 7.64/91.63 1.739 60 ft
Run #3 750 3310 Proform 7.66/91.02 1.753 60ftThe other 2 runs I made today were bad due to no traction. So it appears the Proform was good for .15 sec and 1.4 MPH over my best 1/8 times of 3 weeks ago of 7.79/90.2. I didn't tune the carb today,just put it on and adjusted the idle speed and mixture. This same 3310 before the Proform mod was about .30/2MPH slower than the 600 in the 1/4 so I guess it does make a difference but I don't think its much more than about 15-20HP.Still it was worth the $99 minus the $10 rebate.I'm curious on how it will do in the 1/4. Ok Mike now it's your turn for the Proform test.Hope it works good for you. [This message has been edited by Just Jim (edited 12-09-2001).] [This message has been edited by Just Jim (edited 12-09-2001).]
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badazzcougar
Gearhead Posts: 132
From: Seattle
Registered: Oct 2001
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posted 12-09-2001 12:55 AM
well I fired mine up today on the new motor. Unfortunately its an all new motor with different everything so I wont have a good baseline but it sure idled well and didnt skip a beat. Of course my neighbors now hate my guts as I fired it up at 8pm for half an hour without mufflers.
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capri man
Gearhead Posts: 8777
From: doerun, ga.
Registered: Nov 2000
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posted 12-09-2001 10:37 AM
sounds good jim. i hope to know something by about 8pm eastern time.------------------
mike r
racing is real
everything else is just a game.
81 capri-7.56 @88mph 1/8
1.56 60 ft.
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Just Jim
Gearhead Posts: 381
From: So Cal
Registered: Feb 2000
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posted 12-09-2001 12:27 PM
Mike,inquiring minds want to know so give us a report. Good thing it's going to be at 8PM eastern time because at 8PM Pacific time badazzcougar is going to be annoying his neighbors again.
------------------
"Just Falcon Around"
1962 Falcon 351W
1958 Morris Minor 289
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bluestreek
Gearhead Posts: 1724
From: Athens,GA
Registered: Jul 2001
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posted 12-09-2001 01:27 PM
quote:
Originally posted by capri man:
sounds good jim. i hope to know something by about 8pm eastern time.
Mike, I want to see at least 7.46 @ 90 mph.!!!
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badazzcougar
Gearhead Posts: 132
From: Seattle
Registered: Oct 2001
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posted 12-09-2001 07:46 PM
I just annoyed them again. I really need to get the exhaust hooked up on this thing. The new headers are longer and I'll need it fit at the exhaust shop. Sounds great though.
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capri man
Gearhead Posts: 8777
From: doerun, ga.
Registered: Nov 2000
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posted 12-09-2001 08:22 PM
well i got good news and bad news. the car was consistant as hell, but slower. my 60 ft is normaly 1.65 lately. today it was 1.69-1.70. my et dropped almost 2 tenths over last week. weather about the same. speed down about 2 mph. of course the 5/100 drop in 60 ft time is the reason for most of the rest of the drops. i have been running 35 squrters in my 700 stock carb. the pro-form came with 31 squrters. i left them in there with the same jetting i had in the stock carb. could that have been the difference in the 60ft times. of course my reaction times sucked also. lets blame that on the 60s also. hee hee any ideas??? i am e-mailing pro-form tech to see what they say.
sorry guys!!!------------------
mike r
racing is real
everything else is just a game.
81 capri-7.56 @88mph 1/8
1.56 60 ft.
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n2oMike
Gearhead Posts: 3058
From: Spencer, WV
Registered: Jan 2001
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posted 12-09-2001 08:26 PM
The Pro-Form carb has 750 sized throttle bores. Larger throttle bores need larger jets. Jets that work best in a 700 will most likely be too small for the 750.What jet size did you use? I believe 72/82 is what comes with the Pro-Form body. Of course jetting will have to be fine tuned from there. Good Luck! ------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
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capri man
Gearhead Posts: 8777
From: doerun, ga.
Registered: Nov 2000
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posted 12-09-2001 09:43 PM
mike, i have 72/78 now. any sugestions?
thanks mike
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n2oMike
Gearhead Posts: 3058
From: Spencer, WV
Registered: Jan 2001
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posted 12-09-2001 09:58 PM
Try jetting it up a little. I'd try the jets that came with the body first. Experiment from there.Good Luck! ------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
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n2oMike
Gearhead Posts: 3058
From: Spencer, WV
Registered: Jan 2001
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posted 12-09-2001 11:07 PM
Correction, it comes with 72/84 jets.------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
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capri man
Gearhead Posts: 8777
From: doerun, ga.
Registered: Nov 2000
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posted 12-10-2001 08:45 AM
thanks mike, 72/84 is correct. i will try that but thats a lot of difference from what we all have been taught all our lives about 6-8 numbers different from front to back huh.
do you think the smaller squirters could cause the .05 drop in 60ft? thanks------------------
mike r
racing is real
everything else is just a game.
81 capri-7.56 @88mph 1/8
1.56 60 ft.
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n2oMike
Gearhead Posts: 3058
From: Spencer, WV
Registered: Jan 2001
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posted 12-10-2001 09:57 AM
I would think the larger throttle bores would want at least as much squirter as the 700 did. I'd be want to try it.I believe stock 750 DP's came with 70's and 80's. Good Luck! ------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
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capri man
Gearhead Posts: 8777
From: doerun, ga.
Registered: Nov 2000
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posted 12-10-2001 10:23 AM
my 700 came with 69/78 new.------------------
mike r
racing is real
everything else is just a game.
81 capri-7.56 @88mph 1/8
1.56 60 ft.
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Just Jim
Gearhead Posts: 381
From: So Cal
Registered: Feb 2000
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posted 12-10-2001 06:30 PM
Hey Mike, Sorry you didn't have the good results that I got with the Proform, but I think the potential is there.I must have got lucky wih my base settings of #31 squirter,72 primary and 80 secondary jets,but I checked the plugs and they looked lean.You probably could go up a couple of jet sizes and try the #35 squirters. I never had good luck with double pumpers but am happy with the Proform 3310 vac secondary.Don't give up just yet.------------------
"Just Falcon Around"
1962 Falcon 351W
1958 Morris Minor 289
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cpmaverick
Gearhead Posts: 1669
From: Manhattan Beach, CA
Registered: Jan 2000
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posted 12-15-2001 04:02 AM
Ok, I tried the carb. Last Friday I ran with my 650. Jets 70/76. Ran consistent 13.07-13.15s with a 2.0 60' Best MPH 105.89, average MPH high 104s. Carb was tuned well. Tonight, weather was cooler and less humid, better conditions. Swapped the Proform body and ran 72/80 jets. (84 provided seemed too big). Ran a best of 13.19, best MPH 104.3. Swapped in 78 secondary jets, MPH fell to mid 103s. I didn't get a chance to tune much because my tranny lost 2nd gear.  Obviously I need a little more tuning, perhaps richen it ? But it seems like a lot of fuel for a 302. I don't think that this carb body is going to be better than the 650. But I bought it to go with my X303 cam, and it should fit that cam better. I just thought I'd try it with the B303. Pros- The car idles terrific, its amazing. Much better than the 650 did. Cons- car feels slower, more sluggish at lower RPMS. And it is slower. ------------------
-Charlie Ping
1970 Maverick Grabber
[email protected]
Daily Driver
http://www.maverickgrabber.com
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capri man
Gearhead Posts: 8777
From: doerun, ga.
Registered: Nov 2000
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posted 12-15-2001 10:00 AM
hi guys, i pulled the heads on my car this week and found that the #5 plug was fouled from a previous rich condition. so i cant blame the proform for my slowing down. charlie i called proform tech (talked to marty brown 1-270-793-0900) he was super nice and informative. i did like you and went with 72/78 jets. he said that the proform like 10-12 numbers diff. in jets.
call them and see what they tell you.
good luck------------------
mike r
racing is real
everything else is just a game.
81 capri-7.56 @88mph 1/8
1.56 60 ft.
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kid vishus
Gearhead Posts: 7251
From: middle of NC
Registered: Oct 2000
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posted 12-15-2001 10:09 AM
Charlie,I wouldnt post any judgement about the carb till you try it again with a fresh trans so the comparison is more fair. Maybe the trans was slowly going away before you ever got there.
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Moneymaker
Administrator Posts: 29200
From: Lyons, IL, USA
Registered: May 99
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posted 12-15-2001 12:24 PM
Jim, just for clarification purposes, you were quicker by .015 with the Proform OVER the stock 3310 or the 1850? Didn't you say that the 1850 is faster than the stock 3310 in the quarter also? Or am I just confused? ------------------
Alex Denysenko
Co-Administrator and Moderator
NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00 & '01
Fleet of FoMoCo products
Moneymaker Bio
US Class Nationals link [This message has been edited by Moneymaker (edited 12-15-2001).]
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cpmaverick
Gearhead Posts: 1669
From: Manhattan Beach, CA
Registered: Jan 2000
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posted 12-15-2001 01:32 PM
quote:
Originally posted by kid vishus:
Charlie,I wouldnt post any judgement about the carb till you try it again with a fresh trans so the comparison is more fair. Maybe the trans was slowly going away before you ever got there.
I agree, it took me awhile to get my 650 tuned right. The tranny isn't completly gone, I think the 1-2 shift fork is bent. But it was causing me problems the whole night. I just thought I should post my results. All in all I just don't think that this carb will be an improvement over my 650 until I upgrade my cam. But we'll see.
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Just Jim
Gearhead Posts: 381
From: So Cal
Registered: Feb 2000
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posted 12-15-2001 01:39 PM
Alex,wait until you're my age,you'll really be confused.To clarify:the best 1/8 time with the 1850 was 7.79 and with the 3310 Proform was 7.64,both with similar 60 foots.So the 3310 Proform was good for .15 over the 1850.Both carbs have no choke assy and have secondary metering blocks. When running the 1/4 mile I never could get the 3310 to run better than .20-.30 SLOWER than the 1850 so I never tried it in the 1/8. When this Proform deal came up I figured it would be worth trying it on the 3310 which was just resting on the shelf.Hope this clears it up. ------------------
"Just Falcon Around"
1962 Falcon 351W
1958 Morris Minor 289
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Moneymaker
Administrator Posts: 29200
From: Lyons, IL, USA
Registered: May 99
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posted 12-15-2001 01:46 PM
Soooooo, wouldn't you attribute the performance gain to the extra 150 CFM as opposed to the Proform main body? ------------------
Alex Denysenko
Co-Administrator and Moderator
NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00 & '01
Fleet of FoMoCo products
Moneymaker Bio
US Class Nationals link
|
Just Jim
Gearhead Posts: 381
From: So Cal
Registered: Feb 2000
|
posted 12-15-2001 04:15 PM
Sure,the extra 150CFM would account for something,but without the Proform body just bolting on the 3310 with it's extra 150cfm the car would go slower than with the 1850.The Proform body improved my 3310 enough to allow the use of the carb. To make a real before and after comparison I would have to make a run with the 3310,then switch to the Proform body on the same carb and make a run. If that was the case the Proform would have shown an even bigger improvement. ------------------
"Just Falcon Around"
1962 Falcon 351W
1958 Morris Minor 289
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Moneymaker
Administrator Posts: 29200
From: Lyons, IL, USA
Registered: May 99
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posted 12-15-2001 04:41 PM
Uhhh yeah!  That's probably the way I would have done it to see if there was really any merit in this $99 wonder part. ------------------
Alex Denysenko
Co-Administrator and Moderator
NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00 & '01
Fleet of FoMoCo products
Moneymaker Bio
US Class Nationals link
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Just Jim
Gearhead Posts: 381
From: So Cal
Registered: Feb 2000
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posted 12-15-2001 06:27 PM
OK Alex, the next time there is a test and tune I will do just that.Gonna have to wait until next year though. I'll post the results here. I know that the 3310 made the Morris slow down the .20-.30 that I previously mentioned.If in another test the new Proform wonder part shows an improvement, as it already has, what do I win?I'm running a Brad Urban Carburetor Shop (now out of business since he passed away)3310 on my Falcon motor. It cost me much more than $99 when the carb was reworked with new boosters,4 corner idle,milling of choke horn,etc. There was about a .40/4MPH improvement compared to times before the mods.This same carb when bolted on the Morris also slows it down compared to the 1850. Go figure. ------------------
"Just Falcon Around"
1962 Falcon 351W
1958 Morris Minor 289
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Moneymaker
Administrator Posts: 29200
From: Lyons, IL, USA
Registered: May 99
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posted 12-15-2001 06:30 PM
Hmmmmm, maybe the CS carb doesn't like imports? ------------------
Alex Denysenko
Co-Administrator and Moderator
NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00 & '01
Fleet of FoMoCo products
Moneymaker Bio
US Class Nationals link
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Just Jim
Gearhead Posts: 381
From: So Cal
Registered: Feb 2000
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posted 12-15-2001 07:55 PM
Never thought of that!------------------
"Just Falcon Around"
1962 Falcon 351W
1958 Morris Minor 289
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68bbstang
Journeyman Posts: 29
From:
Registered: Sep 2001
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posted 12-18-2001 08:25 PM
Any word yet from those that have switched over? I'm building a spare 3310 with a Proform to compare. Interested what others have seen after dialing it in. quote:
Originally posted by Just Jim:
Are those 750 CFM Proform carb bodies for real or just hype. According to their info,you just take all the parts off an existing carb and bolt them on the new main body and gain 25-50 HP. They do look similar to the Holley HP series of carbs,but not too sure to believe that they are as good as they say.
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cpmaverick
Gearhead Posts: 1669
From: Manhattan Beach, CA
Registered: Jan 2000
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posted 12-18-2001 08:31 PM
Uh, did you read the post first?
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capri man
Gearhead Posts: 8777
From: doerun, ga.
Registered: Nov 2000
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posted 12-18-2001 09:46 PM
hey cp i got my rebate yesterday, thought that was pretty quick!!------------------
mike r
racing is real
everything else is just a game.
81 capri-7.56 @88mph 1/8
1.56 60 ft.
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68bbstang
Journeyman Posts: 29
From:
Registered: Sep 2001
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posted 12-18-2001 11:53 PM
Uh, I've read ALL the posts. Badazzcougar, you and Capri man aren't dialed in yet, and Just Jim picked up .15 with it. Hardly a consensus. Anything constructive to post?
quote:
Originally posted by cpmaverick:
Uh, did you read the post first?
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cpmaverick
Gearhead Posts: 1669
From: Manhattan Beach, CA
Registered: Jan 2000
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posted 12-19-2001 08:39 PM
Fair enough, you asked if there had been 'any word', and there was quite a bit of info up there. I won't have mine dialed in for awhile due to tranny problems.
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capri man
Gearhead Posts: 8777
From: doerun, ga.
Registered: Nov 2000
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posted 12-20-2001 10:37 AM
ufortunately i will never know because i am in the process of doing some more mods during our 2 week winter break. i really think if i hadnt had other problems on my test runs and had set the carb up like proform told me to that i would have seen a slight gain. guess i will never know huh.------------------
mike r
racing is real
everything else is just a game.
81 capri-7.56 @88mph 1/8
1.56 60 ft.
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badazzcougar
Gearhead Posts: 132
From: Seattle
Registered: Oct 2001
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posted 12-24-2001 06:38 PM
Well ive finally got this proform thing dialed in. Cant take it to the strip till they open in May but seat of the pants is working pretty good and plug coloring is right on. On a fresh 351 C with 2V heads cut for 4V exhaust valves and mildly ported, double valve springs, weiand Xcellerator intake , compcams 280H cam and 10.4:1 compression , 32 degrees timing on 92 octane gas and a 2500 stall converter I am getting best plug coloring with the proform supplied 72 primary jets and with 80 secondary jets on a 3310 based carb with a 4150 secondary metering plate conversion and a long yellow secondary spring. I did end up going back the the original 25 accelerator squirter jet from the original 3310 body instead of the profom supplied 31 squirter. Runs like a champ!
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badazzcougar
Gearhead Posts: 132
From: Seattle
Registered: Oct 2001
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posted 01-01-2002 12:07 AM
One problem with the proform bodies and I am not sure why they did this but there is no provision for venturi vacuum on the primary metering plate. Its just not there, no hole drilled in the main body to allow it. I was checking vacuum signals yesterday and for the hell of it checked the venturi port on the metering body and no vacuum signal. I pulled the plate off and voila...no hole to allow for vacuum...weird! So if you were running a vacuum secondary distributor and using a venturi timed vacuum signal you'd be SOL.
What do I care I have an MSD mechanical only distributor although I am interested in trying the advance lockout now .
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68bbstang
Journeyman Posts: 29
From:
Registered: Sep 2001
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posted 01-05-2002 12:09 AM
Well, got my shipment from Summit and started buiding a spare 3310. Badazzcougar is right, there is no hole for venturi vacuum. This leaves me with a dilemna I need help with. This carb is going on my '68 mustang GT fastback. It has a .030 over 390, 10:1 TRW forged, comp cams magnum 280h, Hooker super comps and adjustable rockers. This car is a weekend street(?) car and is a modified/restoration. The dilemna is what to do regarding the distributor. I would like to keep the stock distributor (it's a 70 CJ part).
BTW, the carb rebuild includes the Proform carb body, 4160/4150 conversion, primary dial-a-jet, secondary quick change and power valve saver.
Suggestions about the distributor and secondary jetting concerns is appreciated. In case you were wondering, low profile air cleaners will NOT clear the primary bowl with the dial-a-jet.
quote:
Originally posted by badazzcougar:
One problem with the proform bodies and I am not sure why they did this but there is no provision for venturi vacuum on the primary metering plate. Its just not there, no hole drilled in the main body to allow it. I was checking vacuum signals yesterday and for the hell of it checked the venturi port on the metering body and no vacuum signal. I pulled the plate off and voila...no hole to allow for vacuum...weird! So if you were running a vacuum secondary distributor and using a venturi timed vacuum signal you'd be SOL.
What do I care I have an MSD mechanical only distributor although I am interested in trying the advance lockout now .
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badazzcougar
Gearhead Posts: 132
From: Seattle
Registered: Oct 2001
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posted 01-05-2002 12:17 AM
You could always jump on the lock out the timing bandwagon that seems to be sweeping the nation. Too much advance in those stock distributors anyway. Youve got about the same engine I had in my 76 F150 truck and I had limited total timing to 36 degrees for best power. With your vacuum advance can and that distributor you'd have to start around 12 degrees at idle with timed vacuum. You need more with that cam. Have you tried running off manifold vacuum? It will give more low end advance and allow you to close your primary plates more for a better idle mixture. If you kept total timing at 36 or less that your idle reading might be closer to 20 but you'd have around 10 degrees static for easy starting. I'm assuming you dont have emissions testing where you live and you have an advance timing light. I was using 72's in the primaries on my 3310 with 4150 conversion and 80's in the secondaries. That was on a 390 with CJ heads , Lunati bracketmaster 2 cam , msd ignition etc in a 76 F150 with 2800 stall converter , 4.1O gears, C6, 31 inch tires. Its a starting point although I still think I was running a wee bit on the lean side before I sold it. What do you think about that dial a jet deal ?
[This message has been edited by badazzcougar (edited 01-05-2002).]
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68bbstang
Journeyman Posts: 29
From:
Registered: Sep 2001
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posted 01-05-2002 01:46 AM
When I get it back together, I'll probably play with it as a full mechanical. My thinking with the dial-a-jet is that it pi$$e$ me off each time I have to pull the carb or bowls to do carb work on a detailed engine. I haven't been following the lock out frenzy very closely. Do you mean lock out the mechanical advance and run more initial? This engine won't tolerate that! I've been having a problem with it breaking the tires loose when it comes on real hard at 3500 rpm. I guess I'll make it worse with the carb work It should get REAL bad when the intake work and gears are done. The most tire I can put under it (without tubbing it) is a 275/60r15 drag radial, so the insanity has to end soon.MW
quote:
Originally posted by badazzcougar:
You could always jump on the lock out the timing bandwagon that seems to be sweeping the nation. Too much advance in those stock distributors anyway. Youve got about the same engine I had in my 76 F150 truck and I had limited total timing to 36 degrees for best power. With your vacuum advance can and that distributor you'd have to start around 12 degrees at idle with timed vacuum. You need more with that cam. Have you tried running off manifold vacuum? It will give more low end advance and allow you to close your primary plates more for a better idle mixture. If you kept total timing at 36 or less that your idle reading might be closer to 20 but you'd have around 10 degrees static for easy starting. I'm assuming you dont have emissions testing where you live and you have an advance timing light. I was using 72's in the primaries on my 3310 with 4150 conversion and 80's in the secondaries. That was on a 390 with CJ heads , Lunati bracketmaster 2 cam , msd ignition etc in a 76 F150 with 2800 stall converter , 4.1O gears, C6, 31 inch tires. Its a starting point although I still think I was running a wee bit on the lean side before I sold it. What do you think about that dial a jet deal ?
[This message has been edited by badazzcougar (edited 01-05-2002).]
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68bbstang
Journeyman Posts: 29
From:
Registered: Sep 2001
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posted 01-05-2002 08:37 PM
I have it back together and obviously I have some dialing in to do. A few things were definitely noticeable from the start.
1) It comes on stronger over 3500 (I need to do some work with the secondary jets and spring, but it feels like I can get a lot more from it)
2) It spins the tires HARD in 2nd and 3rd (toploader), where before it planted them.
3) It will come back off tomorrow so I can open up the secondaries a little to clean up the idle. I used a drilled base plate, but it's still too fat and it's pulling from the transition circuit.
4)I don't have the throttle response I did, but without vacuum advance and it not set up yet, I'll wait to see what happens when I'm done.
5) The dial-a-jet works great. I need more time to adjust it though.
All in all, a good day. Can't complain about the results so far for spending a measely $250.MW
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ackjlo
Journeyman Posts: 86
From: fort myers, fl. usa
Registered: Nov 2004
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posted 01-11-2006 06:26 PM
I just got one of the Holley main bodies. No problem with it, just swapping parts. Didn't improve my et. at all though
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