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Message: <blockquote data-quote="Nate" data-source="post: 1606049" data-attributes="member: 215161"><p>Hi, Im looking for some help, I was wondering if the cam has any effect on the compression. I have a chevy 350 .30over Im trying to get as high of a compression as i can get while staying on pump gas. I bought a set of flat 4vr pistons because the where advertised at 9.7:1 w/ 64cc heads but when I took them to the machine shop they said I was looking at 10.7:1. They said I should stay with the dish piston I already have on my rods they are dish top TRW forged piston pt# L2403NF30 im not sure the dish volume. Here are some of the components I  am using: Comp Cams XE284 cam kit with all matching components, Holley double pumper 750 carb.,461 camelback heads 64cc mild port work and port match to edelbrock performer intake. Est. horsepower would also help. Many thanks to any that respond.</p></blockquote><p></p>