[Ricks1971]

Corteco makes two gaskets with a 4.190 bore and a compressed thickness or .038. These gaskets do NOT brinnel an aluminum head. The are made of two layers of steel with a graphite center. This gasket also has a patent pending WhiteSeal Technology coating that seals immediately and is truely a non stick coating. We are using them in one SBC 68 Camaro driven by Augie Harrera with 13 lbs of boost and run on a 7.50 index. We have run 20 lbs of boost without any problems at close to 2000 hp and 200 MPH. These gaskets do not require any sealant or wire rings to seal.
20431cs with steam holes