cc-rider

I’m rebuilding a LC9 5.3 for a LS swap. I’d like to eventually put some boost to this engine, but I don’t have the budget for it right away. So I’ll be running it NA for a while. I’m thinking about setting the ring gaps for boost right off the bat here in the rebuild so I don’t have to tear the motor down again once I add the boost.

Are there any significant negative side effects to this?

dw456post

You might have a tiny bit of blowby, but not much--depends on your gap. Most of the time, even on a blower motor, it is not in boost most of the time. Run a good catch can meant for boost. I made sure and set my oil rings at .015 gap.

Jimbo1367

Whats a good catchcan for NA and boost?

A.R. Shale Targa

iTrader: (2)

Any boosted engine should just run an A.I.R. pump

dw456post

I have a REV Extreme can and a GM Performance breather made for the LSA setups.

bowtienut

iTrader: (1)

Back to your original question: No, there are not. Gap it for the boost. You'll never see any issue running it NA. No special provisions needed at this point.