ok i just got a 350 from my friend for $275. the motor was rebuild about 5,000 miles ago. im going to swap out the cam for a comp cam exteam fuel injuction cam. with a set of alum. heads mybe from edlbrock or trick flow. one question would be the stock comp. ratio on a 350. and what size is the combustion chamber? i want to be around 9.5:1 or 9.8:1. and the last question is im my 86 camaro z28. is the 305 tpi do i need to get a new computer to use the 350 or can i just change the chip in it. and when i figure that out im gunna order a custom chip from PCMforless.com

thanks for the help. and what size injuctors should be used