ronr

I bought a used LSA short block out of an '09 CTS-V to replace the LS6 that was in my '04 CTS-V (which has a cracked block.) I'd like to "freshen" the short block with new bearings and rings since it's out and I'm taking it apart to clean and inspect everything anyway.

I don't see any ring "kits" available from the usual suppliers. Should I buy individual rings (1.5mm top, 1.2mm 2nd and 2.0mm oil), if so what would be recommended? Alternately, should I just put a new set of stock rings from GM back in?

The motor will have a stock LSA bottom end, CNC's heads, upgraded cam/valve train and current plan is to re-use the Magnuson MP112 from my LS6 on top.

texas94z

Don't forget to hone the cylinders.

ronr

Thanks and yes, did that. Now just need to determine which rings to put in

KCS

iTrader: (20)

I would call around and see what different manufacturers offer and compare to the stock rings. The stock rings are nice, but nothing special so I wouldn't pay for GM rings if they're expensive. Total Seal, Mahle, etc may have something just as good or better for a more modest price.

ronr

Total Seal told my machine shop that they do not make a set for the LSA but could piece one together with individual rings for each position. Similarly, I haven't been able to find a "kit" or "set" from the other manufacturers at the online sites which is why I asked the question here.

keith102371

iTrader: (20)

these are in the classifieds
https://ls1tech.com/forums/parts-cla...-sets-new.html

ronr

According to here https://ls1tech.com/forums/generatio...acts-pics.html the LSA and LS9 ring sets are the same.

According to here http://www.corvetteactioncenter.com/...l#.UmZvChacRWI the LS9 rings are different from and better than the LS3 sets.

Does anyone know the GM part number for the LSA/LS9 ring sets?

KCS

iTrader: (20)

I'm pretty sure you're correct on that info. IIRC, the LS3 rings I got from Hastings were 1.5/1.5/3.0mm. Someone should be able to look up the PN for you though. Maybe try calling the Parts Dept at your local dealership.