Is installing a set of 1.6 rr's into a z28 wit 105k miles a bad idea, its stock pretty much. wud buyin comp rods and lt4 springs make it better or worse. I want rr's but dont want to do nething detrimentle to the engine thanks guys

 

Its fine, just get good valve springs/pushrods & you'll be fine.

 

Thanks, i also see u have a ported intake, do u have matched up heads or no. i have a chance to buy a ported intake for $200 but i dunt have the money for portin the heads, is tath ok to do or not? Thanks again

 

Well buy the intake and save up to match the heads to the intake.