I have a set of new , never used Ross pistons with a 17cc dish, I believe they would work out to around 10.2-1 compression with the edlrobrock heads I used. .30 for a 400ci, .55 over for 440ci. if intrested
New best 10.18 , 1.40 60 ft 496 Scott Brown built, street driven 3600 lbs,654 hp , 653 ft tq
