TTA850's 1989 Pontiac Trans Am GTA

Factory Options:

Originally an L98/A4 car that ran 13.70's with minor bolt ons and 13.05 with a little spray

Exterior Modifications:

3" Harwood fiberglass cowl hood and window tint.

Interior Modifications:

Summit racing seats, RCI 5 point harness, and an 8 point roll bar done by my father and me.

Performance:

1987 LC2 motor out of a 40K mile Grand National. Stock block, crank, connecting rods, JE pistons, small roller cam, mildly ported "TTA" heads, port matched stock intake, Precision PT70 p-trim turbo, CAS front mount intercooler, and 83# injectors.
Best times: 60ft 1.476, 1/8 6.692@103.36mph, 1/4 10.504@128.89mph

That was running 116 octane race gas and 27psi of boost, but it still runs pretty good in total street trim. With 93 octane in the tank and 19psi of boost it's gone 1.582 60ft, 7.146 @ 97.96mph 1/8mile, and 11.287 @ 119.08mph 1/4mile with this current weight and combo. It's been faster with a 1.52 60ft and 11.20 @ 120.22 but was a little over 100lbs lighter at that time.

Suspension/Chassis:

Stock front with Lakewood 90/10 struts, Moroso springs, and no front sway bar. Rear has Hotchkis trailing arms and panhard rod, Jegster torque arm, Lakewood 50/50 shocks, stock springs with air bags, and a stock sway bar. Brakes have been upgraded to 1LE package twin piston alum front calipers and single piston alum rear calipers.

Drivetrain:

TH400 built by myself with a 3200rpm ATI converter and Hughes brake. 3" moly driveshaft by the driveshaft shop. 12 bolt Moser rear w/3.42 gears turns 28x11.5x16 Hoosier Quick Time Pro DOT tires.

Electronics:

Scanmaster 2. Innovative MSBC-1 multi stage boost controller. AEM wideband tied into the factory ECM thanks to Eric at Turbotweak.com. Caspers Knock gauge. Autometer 35psi boost gauge and Autometer shift light.

To-Do List:

Eagle crank and rod upgrade then turn the boost up, dont know when that will happen but thats the plan.