Originally Posted by 451Mopar
when I did that with the 383 engine, I slightly bent 3 valves. It seemed to run OK, but not the same.


Update: just ran a compression check:

#8 155. #7 155
#6 165. #5 155
#4 165 #3 160
#2 165 #1 155

I think I may have dodged a bullet.. I took it for a nice "easy" spin around the block, all felt normal.. those psi numbers look within spec to me. The discrepancy between #1 and #2 is a 6-7% fluctuation.Do you think a leakdown would still be necessary?

Last edited by Torquemonster440; 09/30/19 01:40 PM.
1966 Satellie.. 12.55 @107.75. 906 heads. 3780 lbs.