1981 Pontiac Firebird Trans Am , 137674

Highly modified LS3 Twin intercooled turbos LS7 dry sump oiling system Ported LS3 heads Forged pistons Comp hydraulic roller cam Schwartz custom fabricated headers BeCool aluminum radiator with dual Spal fans and custom shroud Billet aluminum serpentine accessory drive Rick s Tanks custom aluminum fuel tank with internal fuel pump 4. 070inch bore and an Eagle 4. 00inch crank for 416 inches The compression ratio is 9. 0:1 with a set of forged Wiseco pistons LS3 cylinder heads ported by Precision Engine and Machine. The heads flow 340 cfm at 0. 600 lift. LS7 drysump oiling system A pair of 66mm Turbonetics Hurricane Series turbochargers and built the intercooler using cores from Turbonetics. At 20 pounds of boost, the engine made 1, 045 hp and 900 Ibft at the wheel. , rkmotors