Originally Posted By: Mean buzzen half dozen A.K.A. Hank
What turbo are you running & cost?
Any cylinder head porting?

MBHD


Its a Garret GT40-88 to start - I may run out of turbo... \:\) it was $975 new.

Well 750 crank HP should be doable, yep all in a '51 GMC.... but I'm going to work up to that level. \:\) It may get a stint at B ville in some a little slicker..

The '06 head is way better than the '02-05 but they can be made to work . I'll be porting the exhaust port to match the exhaust manifold and blending the bowls into the runner as there is a sharp ridge in the bowl/runner transition. I'm starting with the '06 head.

Last edited by efi-diy; 05/06/08 02:09 AM.
51 GMC 4.2 turbo
Can't solved today's problems using the same technology/thinking that created them