Its pretty weak off the line - I don't have a dyno sheet. Running 3.50's with a 275R60 Tire << quite tall.
Last year without knowing better, I set the timing advance to 30* max thinking wedge head, well the fast burn chamber doesn't like more than 22* on reg. gas and I rattled the motor good - couldn't hear it for the intake racket. It lost a bunch of bottom end power.
Shifting at 5800. I have the stock pistons/cams out of my '06 motor and once I get a few more projects done I'll open the stock early engine up and freshen it up using the left overs. Give the head a good port job on the exhaust and might stick it into something.
Last edited by efi-diy; 10/06/0802:19 AM.
51 GMC 4.2 turbo Can't solved today's problems using the same technology/thinking that created them
