just like is says... what would be a good ring gap on a boosted 5.3? building up am free motor to replace my 4.8l... so i figured i would open them up a but to get help it live..

 

Factory rings, or aftermarket? As high as the ring sits on stock pistons Id go .0055~.006'' X cyl bore dia top, and a little more on the 2nd.

 

Idk what rings yet .... Probably a factory setwould u run new or just regap them?

 

You need to check it first. I run them tight on all my stuff, but recommend a little more gap to others. I don't want to be at blame if something happens, better safe than sorry. Do you have the original rings out of it still? If so what are they?

 

have not dropped the rings back in to check yet... i need to clean the garage out and get to where i can check... this motor is for my truck... and i got a 408 for my car laying all over the garage... damn caddy race lifters

 

i do my top ring at .030-.032 and just make sure the 2nd ring is at least .028 for boost on stock rings. works well. if you go with aftermarket rings they will come with instructions on figuring proper ring gap, I always stay on the bigger side of the suggestions. Good luck witht he build.