so i want smaller combustion chambers??? well which should i get the 58cc or the 64cc...here's a list of the stuff i have and stuff i am working on getting let me remind you that i have a 95 cobra so i have all the goodies they come with...cold air kit, an e303 cam, underdrive pulleys, 3:73 gears, 75mm throttle body, mac shortie headers, 2-1/2" custom x-pipe w/flowmasters thats dumped, 1/2" heat spacer.....jimmy
your CR will depend on what pistons u have. with my 60cc heads and -5cc pistons (flat w/ notches) my CR comes to like 10.0:1 to 10.5:1...too much for boost but great for spray.