Chevy BBC 454 1966-90 2Pc Rms 4Pc Cork Oil Pan Gasket They produce a simulated trigger

They produce a simulated trigger signal that fires the ignition just as if the engine were running

If your TH400 transmission is being used in high power applications

They're also available for most popular automatic transmissions

Speedmaster chromoly steel retainers are made from 4140 chromoly and then heat-treated for long life

They are designed to ensure belt retention at high rpm

Chevy BBC 454 1966-90 2Pc Rms 4Pc Cork Oil Pan Gasket They produce a simulated triggerSpeedmaster manufactures oil pan gaskets that are ideal for the street or strip. These gaskets meet or exceed OEM specs and are proven for racing applications as well. Speedmaster oil pan gaskets are precision cut from cork providing an accurate size and shape for the appropriate oil pan. They are available in 1 piece and 4 piece designs. For a better fit and better seal, get Speedmaster oil pan gaskets.