5ltr5spd

I was just trying to get some opinions, I am about to start ordering parts for the rebuild of my 87 GT and still having a problem deciding what I want to do.</P>


I can't decide between trying to go all motor, wich I am not sure what the cost range would be to reach a 500HP mark all motor on a 302 or if I should do a blower and then with the right pistons I can put a nitros kit on it for the few times I need a little something extra.</P>


Just wanted to get some opinions thanks.</P>

mdvaldosta

it would cost alot more to get 500hp na then with a supercharger.</P>


I don't see geting 500hp out of a 302 NA as practical, I mean all things considering... 1.67 hp per cube NA is steep, I don't know if thats even possible to do while maintaining streetability</P>

84stang

If you are rebuilding the motor, you might want to go ahead and do a 331 or 347 stroker kit. With a kick *** set of heads you would be atleast into the 400-450 hp range. A blower is mainly up to you. A friend of mine has a 302 with a nice set of heads and a holley blower, and he is seeing 430 horse at the wheels. As for nitrous, you'll see 500 easy, but remember that power isnt always there unless you keep your bottle filled.<img border="0" src=smileys/smiley4.gif border="0">

5ltr5spd

<IMG src=smileys/smiley4.gif border="0">hopefully I rarely run into anything that I need the juice for anyway, I will look into that I need to figure out what I am going to do quick so much to do so little time.</P>


I figured N/A was a little out of reach with a 302 but I wasn't sure I know it is easily done with the 351 but I want to stick with the 302.</P>

5ltr5spd

One thing I also wanted to ask, will the rear end be able to take 450 to 500 rwhp and if not what do I need to do?

mdvaldosta

8.8's don't break until you start launching on slicks, but if you wanna be safe and legal, throw in some c-clip eliminators, 31 spline unit and hardened axles</P>

87GT+70mach1

go NA with a 331 stroker and fully ported heads and intake. it may not make 500hp but it can get close. plus you can beat all the supercharged guys with all motor.

jeep45238

Turbo.

N/A never stands a chance against F/I at the same peak power levels.

T5superduty

Its not that hard. All you basicly need is a 9.5:1 -10:1 Compression 331 or 347 ,forged pistons, a good set of heads that are ported really good, a big cam,ported intake, bigger injectors, etcand you would be really close or exceeding 500 hp

makarovboy

I agree with most everybody here, but I'd go the s/c or turbo route with a 302. Much more streetable than n/a, although you have to have a good tune. I've read numerous articles and seen some threads that suggest a very poor idle and drivability problems with just the cam necessary to develope 400hp on a carbed or efi 302. If you're on a budget and go n/a, do the 331 or 347 with the forged hi-comp pistons, and the rest that t5 suggests, and you'll be close.