yea...shitty LT1's...cause you know...its the engine code that makes all the difference...i mean shit, you get some ported LS1 and LT1 heads that flow the identical numbers on a bench with manifolds, identical cams in both, identical exhausts, you know the LT1 would make more power. but ya, all the actual stuff that makes power is irrelevant...its all in the engine code....thats why the B18C5-Rdet is teh roxor!.