Originally Posted by HTMtrSprt

Back to the original topic of this thread.... intake manifold selection. We have been testing different cams in a 408 L92 head combo and come up with some very interesting data. When we tried the GMPP L92 carb/EFI intake, the engine simply died EVERYWHERE. As I have stated before, it's about port velocity, and the carb style intake doesn't have it. The runners are just way too big. If you were to fill the runners in the GMPP intake, I think it would help immensely. As it is, we are modifying an L76 intake right now.... test results to come.

Brian
HiTech Motorsport

Originally Posted by Slowhawk

As for intakes I wouldn't know with L92 heads.I know they work better than a FAST setup with a similar motor running ETP heads.