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Sep 1, 2010 | 09:25 PM

mikeclarke

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more HP

how can i get more HP out of my carb'd 302?? its a 91 block with an 84 302 intake..

Sep 1, 2010 | 09:26 PM

Dskeet6

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Joined: Oct 2007

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something I wish i had more of

Sep 1, 2010 | 10:46 PM

79FordBlake

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Joined: Feb 2007

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From: Wingo, Ky

Quote:

Originally Posted by mikeclarke

how can i get more HP out of my carb'd 302?? its a 91 block with an 84 302 intake..

Well I'm not exactly comparing apples to apples here b/c you have different heads and stuff than me. But I have a 75 302 with stock heads, bored 30 over, Ford aluminum intake, Edelbrock Performer 600 cfm carb, and a towing cam. It will flat out get it.

A pair of heads off of a Foxbody Mustang may help you out. I don't know much about switching stuff out with newer things. Somebody on here will set you in the right direction.

Sep 1, 2010 | 11:40 PM

HIO Silver

Fleet Owner

Joined: Dec 2009

Posts: 20,678

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From: NorCal

The four-cycle combustion engine is a glorified air pump. The more air and commensurate amount of fuel that can be efficiently processed will yield more power.

IMO, the typical Stage 1 recipe is 4bbl carb, dual or single plane intake, headers/free-flowing xhaust

Stage 1.5 adds a camshaft.

Stage 2 is better heads with improved valve train and geometry

Stage 2.5 is balancing, forged pistons, and a power adder - NOS or forced induction (turbo, supercharger, blower)

Stage 3 is a stroker engine.. . that 302 can be stroked to a 331 or 347.

Sep 2, 2010 | 01:57 PM

mikeclarke

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thanks HIO Silver!

Sep 2, 2010 | 01:59 PM

mikeclarke

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would i gain horsepower if i put the original fuel injectin back on it. and plumbed everything for it on my truck?

Sep 2, 2010 | 03:31 PM

emeraldcoupe

Fleet Mechanic

Joined: Jan 2010

Posts: 1,286

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From: spring hill fl

pick up a set of iron gt40's or gt40p's. cheap and easy 30 horse bolt on. only thing with the p heads is the plug is angled different and you may have to run a set of long tubes,i don't think they make a p specific header for a truck. the reg gt40's use reg manifolds/headers. if it's a roller block a stock explorer cam will give you some good low end.

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Sep 2, 2010 | 11:33 PM

HIO Silver

Fleet Owner

Joined: Dec 2009

Posts: 20,678

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From: NorCal

Quote:

Originally Posted by mikeclarke

would i gain horsepower if i put the original fuel injectin back on it. and plumbed everything for it on my truck?

Typically yes, FI is worth a bit more HP.... FI systems with all their sensors and the computer are programmed for combustion efficiency. Some ECUs can be reprogrammed with a handheld device from SuperCips, Bully Dog, etc.. Plus, you'll likely gain a few mpg because the engine is only getting what it needs and no more unlike carbs where we can goose the throttle and have the secondaries open up (or on a double pumper that's 24/7).

Btw, you might want to check CarCraft's website. They did a budget rebuild of a junkyard 302 and made 279 HP on the dyno. That's decent for a nearly a stock rebuild. IMO, a bit cash for parts (like heads) and 1 HP per cubic inch is attainable. Now, you gotta realize that with our Dents we have to deal with more weight: Lb/HP... it's a useable yardstick to compare apples to apples (exclusive of other variables like transmission/rear gear ratio/tire diameter).