Usually when adding boost decreasing the CR a around a full point is a good place to start but, with todays very efficient charge air coolers and some descent 93 plus octane fuel you can get away with stock CR's with lower boost levels and still be able to run a descent amount of spark advance.rollinstnd420 said:hey for the guys that have built motors! what is a good compression ratio so that i can run N/A now with good power but also can handle a good about of boost?
I think by far you ask the most questions on this site. haha. jk bro. And i think you change your mind ever days on what you future plans are for you truckrollinstnd420 said:i believe the stock CR is 10:1 so im look around a 9:1 would that be ok for a n/a motor than to add boost later next year??