Hey guys, we just ordered a new set of pistons for our 406 sbc so we can put a pair of turbos on it. probably going with a pair of 7875's. I checked out Total seals post on ring gap they call for .007 x bore on top and second ring. This gives me a gap of .030 on both rings. This is a 406 with 11.1 compression with a 4.155 bore on E85 and I doubt it'll see anything higher than 25 lbs of boost. I would like to hear from guys with any experience with ring gaps on similar builds. thx guys.