Quote:

that compression ratio with 500hp rating will run fine on pump gas?



Yes, with aluminum heads (depending on the cam) you should easily be able to run 10:1 or a bit more.

Dave

1970 Super Bee 440 Six Pack 1974 'Cuda 2008 Ram 3500 Diesel 2006 Ram 3500 Diesel 2004.5 Ram 2500 Diesel 2003 Ram 3500 Diesel 2006 Durango Limited [url] http://1970superbee.piczo.com [/url]