When introduced for the '05 model year, the C6 received the evolutionary Gen IV LS2 powerplant, which carried ratings of 400 horsepower and 400 lb-ft of torque. While the new engine's cylinder heads ...

In the September issue of GM High-Tech Performance, we dealt with the short block, heads and valvetrain of More Performance's 427-inch LS6. We saw how More Performance's boss Mike Osucha went through ...

This is going to cause some headaches for the forum dwellers who claim that nothing less than rectangle-port heads and a giant cam will make 500 hp on an LS engine. We made nearly 500 with a little ...