What kinda power am I looking at?

79 Fox · May 28, 2019

Hey guys! Recently finished building a nice 302. At first, I estimated 275 horsepower, but that seems low. Anyone have a similar build, or a good guess on power? GT40P heads (upgraded springs, not ported) B303 cam, 1.72:1 rockers, Edelbrock performer intake, Holley 600cfm carb, very nice K&N air cleaner, unequal length shorty headers, BBK h-pipe, no catalytic converter, no A/C, dual electric fan

Mustang5L5 · May 28, 2019

Anywhere from 275-300 rwHP.

Usually the 300 rwHP combos have some good money sunk into them. Porting, different valves, maybe a custom grind cam, etc.

Good thread for reference, although most are EFI combos

Official GT40P headed 300rwhp thread!!!

I've noticed over the past year that quite a few SN95 owners are using GT40P's. Some of them have had amazing results, like Darkpony (297rwhp), and others seem to tap at around 245rwhp... Personally I've hit 271rwhp and 305rwtq running extremely lean (18:1 yikes). I figure their was a little...

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deathb4dismount · May 28, 2019

275 at the tire is on the high side for that combo but not unrealistic.

79 Fox · May 28, 2019

I was only thinking 275 crank. I have no clue though. The more the merrier!

deathb4dismount · May 28, 2019

Yah that's definitely doable. The cam is holding you back.

79 Fox · May 28, 2019

Whats wrong with the cam? Would I need a custom ground cam? Or is there a better aftermarket cam out there?

General karthief · May 28, 2019

Guess My H P !!! - The Dyno & 1/4 Mile Time Thread

UPDATE - FastDriver (26AUG13): After some recent interest in the forums, this thread is again active. Please feel free to add your own dyno, timeslip, and mods. The more details you can provide, the better. Posts without documentation will eventually be deleted. This thread exists to give...

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deathb4dismount · May 28, 2019

Someone please post the b-cam video. @79 Fox the b cam is, well, generally considered be terrible. The stocker with the 1.72s make actually be better. There are at least a half dozen OTS cams that are better. If you plan on swapping, a custom cam is far superior and does not cost that much more than the more popular OTS cams.

79 Fox · May 28, 2019

Ok. I'll look into a custom ground cam.

mikestang63 · May 28, 2019

79 Fox · May 28, 2019

I think I'll just stick with the B cam for now. In a couple years, I'll be building a new, more potent engine anyways.

FastDriver · May 29, 2019

the horse kind

Mustang5L5 · May 29, 2019

Nothing wrong with a GT-40P head and B cam combo. Years back I drove my friend's '93 LX with a 306 and GT40P's and a B cam and factory 3.08's. It was a blast to drive that car as it made plenty of power and really liked to rev. Solid combo.

I wouldn't really run out to change the cam right now. Not worth it for what you'd gain. If you ever decide to go with a better head, then you should revisit the cam

General karthief · May 29, 2019

Since you are running a carbed setup the b cam is fine, granted there are better choices in a modern cam but you're good. Like said above, better heads need a better cam.

ChillPhatCat · May 29, 2019

You can always slap a bigger cam into an engine, but how undriveable do you want to make it?

79 Fox · May 29, 2019

I know! I want it to be a very drivable car. Something that doesn't need to rev practically to redline to make max power.

General karthief · May 29, 2019

Lets get a little more info,
rear gears
trans type (stick or auto)

79 Fox · May 30, 2019

3.73, C4 auto (for now. I'm 15 and still getting used to driving)

Wolf_Fox · May 30, 2019

I have a very similar combo besides fuel injection: edelbrock performer heads, trick flow rockers and springs, BBK ssi intake, & long tubes. Not sure what cam is in the dang thing though. Before i tuned it properly it made about 280hp on the dyno. (you'll lose a tiny bit on an auto) But it also made about the same in torque... And that's where the bite is. I have 3.55 gears on a T5 and shoot, it snaps necks with some good grip. More than enough for a daily in my opinion.

stanglx2002 · May 30, 2019

79 Fox said:
3.73, C4 auto (for now. I'm 15 and still getting used to driving)

Oh then you are doing great...drive the wheels off it while you build a more potent combo

What kinda power am I looking at?

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That is…until I whipped out my Bissell

Crap, didn’t realize my crotch was in that picture

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Crap, didn’t realize my crotch was in that picture

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wonder how much it would cost to ship you a pair

Crap, didn’t realize my crotch was in that picture

Active Member

Active Member

I was uncomfortably high & wearing a helmet

That is…until I whipped out my Bissell

wonder how much it would cost to ship you a pair

Active Member

wonder how much it would cost to ship you a pair

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