1989 Pontiac Firebird Transam GTA project.
Current Modifications List
Engine
Ignition
MSD 8683 Adjustable Timing Controller
Eagle 9 mm iginition wires
Coil relocated for Vortec heads / manifold
Intake
Adjustable fuel pressure regulator (BBK) set @ 47 psi (stock pressure was 44 psi)
Relocated MAT sensor to intake snorkel
Air cleaner housing modified and K&N filter
Ported intake plenum
Arizona Speed & Marine (AS&M) large tube intake runners
SDPC Vortec TPI base manifold
External Corvette EGR system
Cylinder Heads
GM L31 Vortec cylinder heads.
Heads machined for 0.550 inch valve lift
Heads machined for and fitted with 1.43 inch diameter Comp Cams 986 dual valve springs
Pinned rocker studs
Camshaft and Valvetrain
Comp Cams Xtreme XR264HR-12 (P/N 08-501-8) hydraulic roller camshaft. 212 / 218 dur @ 0.050, valve lift 0.488 / 0.495 112 deg LSA.
Comp Cams roller rockers
Exhaust System
Hooker Aerochamber muffler
3 inch high flow cat converter
3 inch mandrel bent cat-back exhaust
Pontiworld "block hugger" headers. These are 4 into 1 shorty style headers with 1 1/2 inch primary pipes
Headers ceramic coated by Competition Coatings
Modified Hedman Y pipe
Miscellaneous
March underdrive crank pulley and alternator power pulley.
Manual cooling fan switches, LED indicators
Knock sensor bypass switch, LED indicator
Derale radiator core adjustable fan switches to control auto cooling fan operation
Smog pump delete
Air cond delete with 1LE Camaro pulley
Transmission
Nil
Chassis / Suspension / Brakes
Custom made subframe connectors (chassis rails) by Gus at High Performance Central (Dallas Conversions)
Interior
Pioneer 50 watts RMS x 4 channel CD / Tuner
Boston Acoustics front speakers
Pioneer rear speakers
Last updated August 8, 2004.