Review on Sealed Power E251K40 Prem Ring by Melvin Belton

are molybdenum rings for a 4 inch oversized .040 bore. I have used exclusively sealed power/speed on engine rebuilds for years. I've never had any problems with this brand. So when I decided to build a 327 Chevy for my Street Rod. Guess which brand I chose? Federal Tycoon has always been good stuff. and something else, made in the USA, quality rings.