Quote:
with compression readings that high you have an actual CR of over 9.5 plus no quench. You'll need to proportion in some race gas asap, pinging does alot of damage in addition to killing performance
Wow!!!
How did you figure that he has no quench? He didn't state what heads he was using, what head gaskets nor how high out of the bore his pistons were.
Richen up your jets and make sure not running lean. A lean ping happens. Agree also that your balancer may have skipped. Use a piston stop and check it out.
66 Dart GT, 402 11.18:109 Best
63 1/2 Galaxie 500XL 406 4Speed 13.20:103 Best
2000 Ram
2005 Durango Hemi.
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