Idiotsgod

How much power can you get out of a 4.6 by putting new internals in it. Im thinking of doing this for my enigeering project in school next year. But i wouldn't be allowed to supercharge or turbocharge. But the internals and heads and suh are all fair game. And what are some brands/parts that would be good to use?

teej281

well if you up your compression you will gain horsepower but if you leave the compression alone you wont gain power. but if you do heads, you will gain a good amount of horsepower along with cams. but just forging the internals with no adjustments to compression wont really yield much improvements.

vanquish

yeah I have forged internals a little bit over stock compression and the car just feels better but it doesnt give crazy hp unless you up compression or do cams like teej281 said above

35thAnni99GT

Run that thing @ 15:1 compression and use a little 112 octane baybeee.

teej281

do not go that crazy. lol id say just a nice 11-12:1 compression motor with a nice set of heads and cams will be a nice monster that is over 300 wheel horsepower.

Idiotsgod

What are the options for uping compression?

teej281

smaller dish on the pistons, combustion chamber size, thinner head gasket. those are all i can think of at the moment...if they are all right. lol

mylongvictor

Bore itout to a 302,put astroker kit 16:1 compression ratio and throw some stage 3 heads and stage 3 cams and make it like the Purple Bucket!

ZW99GT

Please don't use a 4.6. Buy a 302 or old 351.

contentsunderpressur

If your doing this N/A then I'd stroke it for sure. The guys on HP TV put a 302 stroker and cams in a 06 gt. It put down over 380 rwhp N/A!