| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#1
02-07-2025, 08:16 AM
|
||||
|
||||
Engine/car combo set up analysis please
1981 firebird street only car. This was set up a little at a time so may be a slightly mismatched. Curious what you guys think. Let me know what I’ve left out. Looking for any glaring issues not necessarily perfection.
1981 Firebird at about 4000lbs 488 cubic inch Pontiac engine making 430 rwhp @ 3000rpm 130 mph, 592 crank hp 10.95 compression 72cc Eheads ported to 315-320cfm, 1.5 scorpion rockers Northwind intake Hyd roller cam 246/252 114 .600 lift Dougs headers, 2.5” exhaust, dynomax turbo mufflers 3:55 moser rear 275/40/18 tires (app. 26”) TH400 built transmission, unknown shift kit 2200-2400 tci converter Dennys driveshaft Holley Terminator efi Engine was built to run AC but is not hooked up yet March pulley set up, electric fan Viking adjustable shocks, front coil overs I don’t ever take it over about 5500 rpm’s and I don’t think I’ve ever had it over 100mph. I normally drive rather conservatively but it sees a good bit of “off the line” rips. 
__________________
1981 Trans Am project -YJ 400 stroked to 488 CID-74cc Eheads-10.95:1-Northwind Intake-Holley Terminator-TH400-3:55 Moser rear-Dougs Headers.... |
| Thread Tools | |
| Display Modes | |
|
|
The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.
Threaded Mode