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Author
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Topic: Carb Selection help
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Kyle
Gearhead Posts: 400
From: Sumner, WA
Registered: Dec 2001
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posted 04-07-2004 03:13 PM
   
Well, I have finally decided on what i'm going to do with my 351W for the Fairlane. I'm going to do a mild build-up, and concentrate on building a stout chassis now. Anyway, the basics of the motor are KB F/T pistons, stock crank, stock rods w/ ARP bolts, ARP main and head bolts, a custom cam yet to be determined by Buddy Rawls, and the rest you can see in my sig.So, I need to know what carb I should run. I have a few to choose from, and would like to know what you think: -standard 650 DP
-modified 650 DP (choke milled & blended, looks just like an HP)
-standard 750 vacuum secondary
-standard 800 DP Whataya think? ------------------
Kyle Laramore '63 Fairlane: 351W, 10.2:1, custom hyd. roller cam, Victor Jr. heads & intake, Super Comp headers, duraspark & 6AL, C4, 4500 stall, 4.11 gears, 26" slicks '66 Mustang Coupe: 289, Offy intake, Crane Blazer hyd. camshaft, Autolite 4100 carb, Headman long tube headers, manual, 3.80 gears '70 Mach 1: 351C-2V, Weiand intake, 750 holley, Flowtech long-tube headers, MSD ignition, C6 trans, CJ converter, 9" track-loc rear, 3.50 gears, Flowmaster 2.5" mandrel exhaust w/ 3-chamber mufflers Words to build engines by: "Never Assume!" My Photo Page
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wildfire466
unregistered
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posted 04-07-2004 04:37 PM
Um, I would say 750DP. I'd like to comment on choke horn milled off. I was lucky enough to buy a carb from a racer that had the carb modified after the choke horn was milled off. It appears if done correctly the the idle air bleeds need to be taylored also. Something about after milling the air horn now comes acrossed the air bleeds and not straight thru them. Proform sell throttle bodies. They have adjustable bleeds. They have a replacement body for 650 but it is also the same one for 750 so when changed you get 750. My thoughts is if you upgrade to Proform it may flow more then the 750? My ideas,
Les ------------------
http://www.geocities.com/wildfire1mustang/
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steve'66
Gearhead Posts: 8826
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 04-07-2004 10:22 PM
Kyle,Of the carbs that you have available, I'd pick the 800dp'r. I'd use a 750 dp'r if I didn't already have a 800 dp. I used a 750vs carb on the old 351w and it worked ok except it would have been better out of the hole with the 2nd accelerator pump shot. Your 351w is stouter than our old 351w so I think you'll be fine with the 800dp. Good luck, SteveW
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Moneymaker
Administrator Posts: 25883
From: Lyons, IL, USA
Registered: May 99
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posted 04-07-2004 11:19 PM
From the selection you are giving, the 800 DP.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,& '04
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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wildfire466
unregistered
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posted 04-07-2004 11:30 PM
Kyle tried to click on photo page the link looks like this:http://http://mustangsandmore.50megs.com/MembersPics/Kyle.html There are two http:// http://mustangsandmore.50megs.com/MembersPics/Kyle.html I took one off so let's see if it works? Les
Yep that fixed it!
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http://www.geocities.com/wildfire1mustang/ [This message has been edited by wildfire466 (edited 04-07-2004).]
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wildfire466
unregistered
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posted 04-07-2004 11:39 PM
Off Topic:Nice cars Kyle! I have enough problems keeping up with one car!  Take care of 'em! Les ------------------
http://www.geocities.com/wildfire1mustang/
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Fastymz
Moderator Posts: 18703
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 04-08-2004 01:09 AM
Sounds real close to my motor but you'll have more cam and bigger heads. I can't to hear how it runs.
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SCOOP oddly obsessed with big scoops on little Mustangs 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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Kyle
Gearhead Posts: 400
From: Sumner, WA
Registered: Dec 2001
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posted 04-08-2004 12:49 PM
Thanks Les! I think I fixed the link problem, too (although, now i'm kinda embarased; i see the caption above the engine picture of my '66 says 4100 carb, which it has now, but the picture shows the motor when it had the carter on it). Between building this new motor for the Fairlane and all the little odds and ends for the other two, there's always something to be done.Ron- I don't know what my cam is going to look like- i'm putting my faith into a guy named Buddy Rawls. He takes all your engine information and determines valve timing events mathematically, then I go out and have the cam ground as close as possible. The service costs $35. I figure even though this is a "low budget" (are they ever really low?) build-up, there's no reason to have the wrong cam. Of course, I am having a local cam shop, called Delta Cams, grind it for me. Only going to cost $70 for a hyd. roller cam. The catch: it's a re-grind, so you have to get custom length pushrods. So I might end up with a smaller cam than yours, Ron! I'll let you know when I get the results back from Buddy. So it will be the 800 DP. Should I use 50cc pumps? What would be a good starting point for jets, pump cams, and squirters (I have a real problem getting those right)? Should I invest in a K&N stub-stack for it? Thanks all! ------------------
Kyle Laramore '63 Fairlane: 351W, 10.2:1, custom hyd. roller cam, Victor Jr. heads & intake, Super Comp headers, duraspark & 6AL, C4, 4500 stall, 4.11 gears, 26" slicks '66 Mustang Coupe: 289, Offy intake, Crane Blazer hyd. camshaft, Autolite 4100 carb, Headman long tube headers, manual, 3.80 gears '70 Mach 1: 351C-2V, Weiand intake, 750 holley, Flowtech long-tube headers, MSD ignition, C6 trans, CJ converter, 9" track-loc rear, 3.50 gears, Flowmaster 2.5" mandrel exhaust w/ 3-chamber mufflers Words to build engines by: "Never Assume!" My Photo Page [This message has been edited by Kyle (edited 04-08-2004).]
IP: Logged |
Fastymz
Moderator Posts: 18703
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 04-08-2004 02:41 PM
Kyle let me know I'd like to hear what they recommend.
Sounds like we need to race this summer or at least compair times.   "I figure even though this is a "low budget" (are they ever really low?)" I know boy do I know anyone thats says low budget motor was only X amount I figure I can add 40% to it and that might be closer to the total price.
It's not just the motor, then what about the convertor and gears, tires, suspension ect.
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SCOOP oddly obsessed with big scoops on little Mustangs 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics [This message has been edited by Fastymz (edited 04-08-2004).]
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Moneymaker
Administrator Posts: 25883
From: Lyons, IL, USA
Registered: May 99
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posted 04-08-2004 06:07 PM
Leave the stock 30 cc pumps in for starters.
Hold off on the sub stack. I'm sure you have an air cleaner base lying around for now.
Is the carb stock and in good working order?
If so try it as is right out of the box and we can advise from there. You'd be surprised at how well most Holley DP's perform right out of the box.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,& '04
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
IP: Logged |
Kyle
Gearhead Posts: 400
From: Sumner, WA
Registered: Dec 2001
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posted 04-08-2004 06:34 PM
Yes, I do have a couple air cleaner bases lying around. Are you saying to run just the base, or a complete air cleaner? Drop base or flat? I wasn't running anything before, just the scoop pulling cold air in. I'm planning on building a tray to seal the carb to the hood opening also this season.The carb needs a basic rebuild, and i'm going to add the jet extensions and float from my 650. So run it as is, with both power valves in there? Works for me.I'll have to look up what the stock jets and squirters are supposed to be, and make sure thats whats in there. Thanks Alex. My problem always seems to be that the car will die when stabbing the throttle on the green light (I ran a 30.42 sec. quarter mile that way). But that was with the 302.
IP: Logged |
Moneymaker
Administrator Posts: 25883
From: Lyons, IL, USA
Registered: May 99
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posted 04-08-2004 07:00 PM
Dropped base.
As small a power valve as you have. (3.5 or 4.5)
If you have them, use some big discharge nozzels (squirters). 35-37 or so. That should cure the off idle stumble.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,& '04
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
IP: Logged |
Kyle
Gearhead Posts: 400
From: Sumner, WA
Registered: Dec 2001
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posted 04-08-2004 10:28 PM
Drop base only or whole air cleaner?
IP: Logged |
Moneymaker
Administrator Posts: 25883
From: Lyons, IL, USA
Registered: May 99
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posted 04-08-2004 11:46 PM
Base only.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,& '04
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
IP: Logged |
74merc
Gearhead Posts: 1006
From: Demopolis AL
Registered: Jun 99
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posted 04-12-2004 09:58 AM
quote:
Originally posted by Kyle:
Ron- I don't know what my cam is going to look like- i'm putting my faith into a guy named Buddy Rawls. He takes all your engine information and determines valve timing events mathematically, then I go out and have the cam ground as close as possible. The service costs $35.
Buddy knows his stuff. I've had many discussions with him in the past, he'll get you fixed up right.
IP: Logged | |
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