best mods for xtra 65 horse or so?
 

hey...

i've got an 85GT that i've been driving around and have decided to throw some money into it...

i've just picked up a turbo coupe rear end (8.8", 3.55 or 3.73 gears - not sure yet, disc brakes).

i want to know what you guys think i should do to get the car up past the 250 hp mark... between 250 to 300... closer to 300 would be nice :p

the car is bone stock with about 107k miles and i don't really want to tear into the engine too much. i'm gonna do the exhaust soon with dynomax super turbo or ultraflos and was wondering whether the best bet would be to throw on a set of heads or what...

thanks

The 85 stock heads suck. This should be number 1. get anything other than what you got. Second is your car a carb or is it CFI? If its CFI, get rid of it and get a carb and a performer intake. But, you said you dont want to dive into the engine to much. You could just through NOS at it and get that power level, but I would not do that with 107K on a stock engine.

it's the holley 4180. it's a california car so i can't really mess with the emissions stuff.

i was thinking maybe a set of heads and some 1.7 rockers...

If the turbo coupe rear came out of an auto it has 3.73's, if it came out of a manual it has 3.55's.

I believe the E5 heads are almost the same at E7's, its the 86 heads which really suck. But still the 8.3:1 compression sucks, and I think you would benifit from a good set of heads and a better intake.

Heads, intake, headers, true dual exhaust.

i see that you've got a set of performer heads... how are they? was thinking about getting a pair