I was checking the compression on my stroked 340 and here are the mumbers 1/200,2/200,3/190,4/205,5/150,6/185,7/190,8/185. we checked this with two gauges.
and came up same. I have adj. hyd.roller rockers if that matters. This is not a new motor and runs pretty good. I am not running high comp. pistons 9.7 I think, and X heads.
I have been told the exhust valve isn't opening enough ?? I will pull the valve cover off tomorrow and do some checking. Just wondering about so much comp.
