302 performance build
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Freshman User
Joined: Jul 2012
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302 performance build
What started as restoring a 1950 f1 with a stock rebuilt 302 to sell has now turned into a full performance build to keep for myself. Heres a list of the parts I have bought already.
1. Parker funnel web intake.
2. Holley dominator carb
3. Comp cams magnum 294 .560 lift
4. Comp double valve springs
5. Comp magnum double roller chain
I have the cam installed and ready to go. So now what I need is some good heads. What heads would you use?
I know trickflow twisted wedge, afr, and edelbrock victor jr are my best options, but they are a little more than I would like to spend. So I would like something that flows good and will not bust the bank.
Has anyone actually used procomp heads? I've stories of them being horrible, but has anyone actually used them that would like to comment?
1. Parker funnel web intake.
2. Holley dominator carb
3. Comp cams magnum 294 .560 lift
4. Comp double valve springs
5. Comp magnum double roller chain
I have the cam installed and ready to go. So now what I need is some good heads. What heads would you use?
I know trickflow twisted wedge, afr, and edelbrock victor jr are my best options, but they are a little more than I would like to spend. So I would like something that flows good and will not bust the bank.
Has anyone actually used procomp heads? I've stories of them being horrible, but has anyone actually used them that would like to comment?
Elder User
Joined: Nov 2009
Posts: 666
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From: Chicago area
ProComp has most of their parts made in China. You figure it out.
I would sooner buy a used set of American made heads and get them rebuilt then buy a set of Chinese made heads that were "ready to bolt on".
I would sooner buy a used set of American made heads and get them rebuilt then buy a set of Chinese made heads that were "ready to bolt on".
Hotshot
Joined: May 2003
Posts: 11,141
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From: south louisiana
What size Dominator carb ? What exactly are you expecting as far as a powerband with this motor ? To use that intake and carb (if it's what I think it is), you're going to need a stout block, a forged crank and spin the snot out of it (combined with a very deep rear gear) Even then the carb will likely be too big.
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I'm not sure what size carb it is it was on the truck when I bought it (stock 302) and it ran slightly rich. I'm planning on a 3.25" stroke forged crank. I'll probably run it up to 6500 rpm and I'm running a 4.23 rear gear.
FTE Legend
Joined: Jun 2006
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From: Ottawa, Ontario
If you're buying a stroker crank go all the way to 3.5".. there is no replacement for displacement(except a blower) and these larger kits no longer have the oil consumption issues you read about all over the web. Trickflow heads will require matching pistons with offset eyebrows with that cam just so you're aware, while other brands will work with standard eyebrowed pistons. For heads look at the Ford X Series turbo swirl, or Dart or RHS irons if you're not too concerned about weight.. these irons flow right up there with the better aluminums which is much better then those Porcomp or World Products heads do.
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Hotshot
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I'm not sure exactly tbe history of this engine. It was rebuilt with 15 miles on it when I bought the truck. It ran good and strong the whole 30 miles I put on it though lol. I am going to measure the stroke and bore before I order any parts for it though just to make sure it is stock and see what size pistons I will need. And yes I'll be winding it 6000+.
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Joined: Jan 2013
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I don't have all the specs to work this up, but if you follow through to match the components you'll likely be spinning at 7000 to 8000 with a good set of heads.
AFR 165 will let a 289 hit 7000 with a 270H (224 @ .050), RPM Air Gap, Holley 750DP, 1 5/8 long tubes and a minimal exhaust pipe, 18 inches or so.
To match the rest of your combo I'd go with something minimum of the 165, maybe the 180 (185?) or 205s.
A set of older 351 heads or Dart heads would be a cheaper option, but likely at a 50 to 100 hp drop vs a good set of aluminum heads. The cam won't have great torque, but it will spin. A smaller set of heads won't let you spin as high, though it will increase the low RPM torque a little bit.
Edit: by low RPM torque I mean 2000-4000RPM. Below 2000 is going to be pretty weak, even with a set of good stock heads.
AFR 165 will let a 289 hit 7000 with a 270H (224 @ .050), RPM Air Gap, Holley 750DP, 1 5/8 long tubes and a minimal exhaust pipe, 18 inches or so.
To match the rest of your combo I'd go with something minimum of the 165, maybe the 180 (185?) or 205s.
A set of older 351 heads or Dart heads would be a cheaper option, but likely at a 50 to 100 hp drop vs a good set of aluminum heads. The cam won't have great torque, but it will spin. A smaller set of heads won't let you spin as high, though it will increase the low RPM torque a little bit.
Edit: by low RPM torque I mean 2000-4000RPM. Below 2000 is going to be pretty weak, even with a set of good stock heads.
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http://www.summitracing.com/parts/rh...1-01/overview/
Not much cheaper than the others, but the numbers are pretty decent. The 2.02 intake valve will probably be an issue.
Not much cheaper than the others, but the numbers are pretty decent. The 2.02 intake valve will probably be an issue.
Lead Driver
Joined: Sep 2003
Posts: 7,010
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From: SoCal
There's an engine builder named Dave Williams who built some pretty big engines on 302 blocks. For example, a 351 for Chuck Fry, who used to run the fordnatics mailing list:
Chuck Fry's 302 Stroker
I think he also built a 6 liter engine on a 302 block for a guy name Sixto Bernal, just because the guy wanted it to match his name. That required a bit of work on the crank:
Sixto Bernal's 366 Stroker Crank
So longer strokes are possible.
Chuck Fry's 302 Stroker
I think he also built a 6 liter engine on a 302 block for a guy name Sixto Bernal, just because the guy wanted it to match his name. That required a bit of work on the crank:
Sixto Bernal's 366 Stroker Crank
So longer strokes are possible.