bouchermb

I saw the GT-40 intake, but wasn't sure about heads. Would you recommend a cam without heads?

bouchermb

Never mind. I did just see he had heads from an earlier post.

If you did the heads I'd think a cam is fine, unless I'm missing something.

P Zero

Even with stock heads a cam is still a good upgrade, probably one of the best. I built a 79 5.0 with all upper end stuff from my 85, some minor machine work on the exhaust port on the head, a .496/.510 lift 280/292 duration cam and a holley 650 vacuum secondary carb. The thing ran sick, was way faster thana stock stang. I woulda guestimated the power at right around 260/270hp and in a 2500lb vehicle, that makes for 1 quick car. I think you need more fuel.
-P.

bouchermb

Impressive. I would have never guessed that was possible.

danmustang

hello thanks for lots help yes ive got the gt-40 intank and heads and yes i will run top end and just wants to keep going but it seem like it should have made a bigger diff, than it did but 28 psi i know is low ive already dropped tank and got old one out now i am gonna get 190 tomorrow and ill get 24lb inject, ordered but just by putting in pump i should be able to tell a diff, correct also so in the 1989 computer do i need chip or diff ,computer like out of a cobra , i dont think it can be reflashed what would i use in this case ,

thanks guys for the help

88stangaruu

A B303 isnt going to make a gigantic difference, give it a break. Its more of a duration cam, valves stay open longer. And with 28psi, its not helping things any.

If you want more power, go with a little bit bigger cam.

I would go with a Trick Flow cam, ive heard lots of good things about them. I run a FRPP F303 cam and its got boat loads of power up at the top end, but it is what it is, an older grind cam. Technology has gotten better. Go with a Trick flow or a custom cam next time. Comp has some nice grinds for the 5.0 to.

Shop around a little bit.