You cannot deny that the LS1 engine is a sweet piece. There probably was never a powerplant, which sat between the fenders of a Pontiac that was so easy to make power with. A simple cam swap and head ...
The Gen III LS1 engine factory-installed in '98-'02 Firebirds, '04 GTOs and the Gen IV LS2 between the fenders of the '05-'06 GTOs are excellent powerplants. Current LS2 engines are rated at 400 hp ...