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Author Topic:   Intakes- Which is better???
gt350mike
Journeyman

Posts: 12
From: Huntsville, AL
Registered: Feb 2002

posted 02-25-2002 01:11 PM     Click Here to See the Profile for gt350mike   Click Here to Email gt350mike     Edit/Delete Message   Reply w/Quote
I'm currently figuring out what type of motor is going to replace my Street Boss in my 66 Mustang (either 347 or 393). The 393 will cost about $800 more so that is a major factor (with my wife, not me). The replacement motor will be 10.5 to 1 to 11 to 1, the cam will be 242 duration @ .050 with a .570 lift. I plan to use Windsor Sr. heads with no mods. My car has a 3.73 gear and weights about 2800.
Any sugguestions will be APPPRECIATED!

Mike

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Fastymz
Moderator

Posts: 18703
From: Reno Nv USA MEM#1240
Registered: Apr 2001

posted 02-25-2002 02:29 PM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
Welcome Mike your sounds like it's going to kick some *** .

I like the Edelbrock RPM air gap or just the plain RPM,they make great low-high rpm power and only give up alittle on the top end.That would be my 1st choice for a S/S car.


SCOOP

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65 coupe,351w,RPM intake,Carter625,shorty headers,2.5 exhaust, Flowmasters,C4,open 8" 2:80,Big Boss 429 hood scoop,Crager SS,Black Suede.
MEM#1240

https://mustangsandmore.com/ubb/Fastymz.html

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V8 Thumper
Gearhead

Posts: 4377
From: Arizona
Registered: Dec 2001

posted 02-25-2002 02:49 PM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
I like (and own) the RPM airgap as well, would recommend it to anyone, but...

That stroker (either one you've got in mind) will make enough torque to pull stumps out of the ground, enough to where you may be willing to sacrifice a bit down low. If you stick with the 8.2" deck (347) a Vic Jr. and a short air cleaner would clear your stock hood (right, Alex?). A tall single plane along with those kinda-short gears would pull hard higher up into the RPM range than the dual plane. The taller deck (393) puts you behind the 8 ball in terms of hood clearance unless you want to run a cowl hood. A torker (short single plane) is an option for either motor. I'd say you've got enough cam to run a single plane.

Oh hey, welcome to M&M

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Moneymaker
Administrator

Posts: 25883
From: Lyons, IL, USA
Registered: May 99

posted 02-25-2002 04:12 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
Welcome to M&M ! 347 with those good heads and cam dictates a Victor Jr. and a big carb.

------------------
Alex Denysenko
Co-Administrator and Moderator/ non 65-66 Mustang owner sensitivity co-ordinator

NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Part time secret agent license #0089
US Class Nationals link

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n2oMike
Gearhead

Posts: 2419
From: Spencer, WV
Registered: Jan 2001

posted 02-25-2002 06:41 PM     Click Here to See the Profile for n2oMike   Click Here to Email n2oMike     Edit/Delete Message   Reply w/Quote
Well, nobody seems to be addressing the 347 vs. 393 issue...

I'll vote 393!

Go for the cubes. The 351W block is WAY stronger than the factory 289-302 unit, plus the 1/2" head bolts make life MUCH easier if you ever decide to slap a nitrous kit on the ole' beast. Nitrous will be pretty much out of the question with a stock block 347 stroker.

Ford already stroked the small block the RIGHT way by using a stronger block, longer rods, bigger head bolts, etc. Follow their lead, and add to it a bit to give yourself an unbeatable combination. Add a set of Hooker #6208 1 3/4" swap headers to make it all work.

Stroked 351W's can make unholy amounts of power and torque. Top it with a Victor Jr. and a big carb and be happy. Remember, these intakes were designed with the STOCK displacement in mind. Go bigger when selecting carbs/intakes/exhaust for a stroker. I'd recommend a HP950 Holley. (smoothed out 750 sized throttle bores for velocity and a good signal, combined with an 850 baseplate) It's a NICE unit. A company by the name of BIGS also puts out some excellent carbs, and at a good price!

http://www.fordmuscle.com/archives/2001/09/bigs/index.shtml

GO FOR THE CUBES!!!

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
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220

[This message has been edited by n2oMike (edited 02-25-2002).]

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Moneymaker
Administrator

Posts: 25883
From: Lyons, IL, USA
Registered: May 99

posted 02-25-2002 07:40 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
Yeah but I was thinking that he might be afraid of his wife.

------------------
Alex Denysenko
Co-Administrator and Moderator/ non 65-66 Mustang owner sensitivity co-ordinator

NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Part time secret agent license #0089
US Class Nationals link

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chips67
Gearhead

Posts: 651
From: louisville, ky, usa
Registered: Jul 2001

posted 02-25-2002 08:20 PM     Click Here to See the Profile for chips67   Click Here to Email chips67     Edit/Delete Message   Reply w/Quote
THERES A LOCAL YARD WITH A 351W complete....condition unknown, but rebuildable. they're asking $100.....should i get it? ive got a lot of parts on my current 302 that would work on a 351w but im a big time fan of "light = might" rule and since my car wont hook now wouldnt a 351w mke matters worse? how much heavier is that 351w than a 5.0 anyway? one last question....which set of heads is better from the factory....the e7's or the 69-70 model 351w heads?? should i get the 351w?

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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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n2oMike
Gearhead

Posts: 2419
From: Spencer, WV
Registered: Jan 2001

posted 02-25-2002 08:38 PM     Click Here to See the Profile for n2oMike   Click Here to Email n2oMike     Edit/Delete Message   Reply w/Quote
You should get the 351W IF you've got a good set of heads to feed it with. If you're looking at using the stockers, it won't be worth your trouble. BUT, for $100, it would be a good engine to have for a future project.

351W strokers with BIG heads make insane amounts of power and torque. If it is even remotely in the budget, it's gotta' happen. Those 347's have a way of wearing out fast and using oil. It may even be financially prudent to INVEST in the longer lasting, lower revving, 393ci 351W stroker. Durability is a MAJOR plus with the stronger engine.

Chips67, are you REALLY having trouble hooking up with slicks? Are you sure it isn't a bogging problem? I can't get my car to NOT bog with slicks at the dragstrip (no bottle).

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
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220

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gt350mike
Journeyman

Posts: 12
From: Huntsville, AL
Registered: Feb 2002

posted 02-25-2002 11:00 PM     Click Here to See the Profile for gt350mike   Click Here to Email gt350mike     Edit/Delete Message   Reply w/Quote
Ok guys....I greatly appreciate your concern for the wrath of my wife! She can't be mean all the time because 3 weeks ago she did her homework and bought me a 7mm Mag for my anniversery present!
As far as everyone's reply to the engines, the input is really great. I'm going to start looking for a 351w block in my area to see exactly how much it will cost to build a 393/408. The 347 option is much cheaper because the local speed shop has a complete (new) kit for about $700 cheaper than if I bought it from mailorder. I checked it out today so that make my decision lean towards the 347. The only other question is the flywheels and balancers. Can I use the same off my 302 motor? I know that the 28 oz. is for the early model and the 50 oz. is for late model, but if you buy a stroker kit, which one do you have to use when balancing the assembly???

Thanks again for everyone's reply!

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steve'66
Gearhead

Posts: 8826
From: Sonoma,CA,USA
Registered: Mar 2000

posted 02-25-2002 11:17 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
Mike,

You've got a great woman there! I mean a 7mm all on her own, she's a keeper!

Anyway back to the engine, the 347 kit is probably a 5.0 deal w/50oz imbalance. Be sure to ask. The 351w will need a bunch of parts you probably don't have like different headers, oil pan, intake, etc. Personally I'd do the 351w deal and don't look back! (actually I already did that)

Now looking to stroke it to a 408w, but even that move means all new parts! Figure out what you want before you do it. The stroker needs bigger everything, except for the block.

SteveW

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chips67
Gearhead

Posts: 651
From: louisville, ky, usa
Registered: Jul 2001

posted 02-25-2002 11:48 PM     Click Here to See the Profile for chips67   Click Here to Email chips67     Edit/Delete Message   Reply w/Quote
mike...working on the hook problem this year. the best set of heads id have would be the afr165's on my 5.0 motor right now. they are probably better than the 69 351w heads im sure but they only have 1.90 intake valves. i guess id probably have to get 1 3/4 primary tube headers (im sure this has been discussed that they dont have a long tube header for a 351w in a 67-68 4 speed car) and probably another carb and intake. just wonder what that 351w would crank out with the 165 heads? another set of heads would definetly be out of the budget. besides, wouldnt i have to give up my roller cam? roller lifters for non-roller blocks are stupid high.

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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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n2oMike
Gearhead

Posts: 2419
From: Spencer, WV
Registered: Jan 2001

posted 02-26-2002 06:30 AM     Click Here to See the Profile for n2oMike   Click Here to Email n2oMike     Edit/Delete Message   Reply w/Quote
The headers you need for the 351W swap are Hooker #6208. These are 1 3/4" swap headers for installing the 351W in 65-70 mustangs.

As far as installing stock or AFR 165 heads on a 351ci engine, they should be okay, but it's going to be a 'midrange' engine. It will run out of breath around 5500 rpm. A 351W needs larger heads, ESPECIALLY when stroked. Steve 66 does pretty well with a 351W in his 66. He has a very similar Edelbrock head and a solid lifter cam with 236 degrees of intake duration @ 0.050" You guys might benefit from sharing a little info.

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
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220

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67Coupster
Gearhead

Posts: 181
From: Fortson, GA, USA
Registered: Oct 2001

posted 02-26-2002 01:29 PM     Click Here to See the Profile for 67Coupster   Click Here to Email 67Coupster     Edit/Delete Message   Reply w/Quote
Those Hooker #6208's will work with the 4-speed. That's what I'm using.

------------------
James
67 Coupe
393W, AFR 185, 4 Speed, 4.11 9 inch
7.39 @ 96MPH 1/8
1.66 60'

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