This is the first in a series on a 1968 Chevelle with a 307 CI engine making about 150-170 HP with a 2 speed power glide transmission. Instead of scrapping the old 307 we are upgrading the top end, adding a mild cam and lifters and installing Vortec Heads and long tube headers. Hopefully, when we are done, the engine will be making close to 310 HP or better. The question is: "will it grenade or will it survive?"