Chevy BBC 454 Gen 5 & 6 1991 - Up 1Pc RMS Rubber Oil Pan Gasket 8" diameter ring gear and

8" diameter ring gear and removable pinion support

a pressure plate

Speedmaster lightweight crankshafts are perfect for engines wanting quicker rpm

They accurately measure camshaft centerline

Compatible with Gas

Chevy BBC 454 Gen 5 & 6 1991 - Up 1Pc RMS Rubber Oil Pan Gasket 8" diameter ring gear andSpeedmaster gaskets are designed for today's performance engines, which can create excessive amounts of vacuum and pressure in the oil pan. They're constructed from a cellulose nitrile material that features excellent tensile strength and superior blowout resistance, and their latex coating conforms to minor sealing surface irregularities for a better seal.