Join Date: Jul 2010
Location: Puerto Rico
Posts: 4
Car: 1989 GTA
Engine: L98
Transmission: TH-700R4
Axle/Gears: 3.27

Classifieds Rating: (0)
Re: 86 Trans am. 101k, new eng, many upgrades
I have an 1989 GTA w/L98 stock
Hypertech thermomaster chip
underdrive pulleys
shorty headers and full lenght 3inch exhaust w/o catalytic converter single inlet and outlet dynomax super turbo
air foil
1.6 roller rocker arms
no screen in MAF
open element air filter
I have plans to put a set of heads cast numbers #186 fully ported 1205 intake and 1404 exhaust matching gasket and 2.02 int and 1.60 exh, and 3000 stall converter with lock up.

I want to know how much power gain and time slip 1/4 mile, and if I need another modification need when I put these head?

stock 3.27 diff, appreciate your help.....Thanks!!