Chevy SBC 350 Oval Port Copper Exhaust Gasket Set Speedmaster main caps improve reliability

Speedmaster main caps improve reliability in highly stressed engines by reducing distortion of the main bearing bores

Count on Speedmaster for your vehicle's hydraulic roller camshaft needs

they utilize a cotton gauze with aluminum mesh construction

Installing a Speedmaster oil restrictor kit will limit this unnecessary oil flow

Chevy SBC 350 Oval Port Copper Exhaust Gasket Set Speedmaster main caps improve reliabilityThese Speedmaster exhaust gaskets are made from thick copper, and feature an embossed ridge around the exhaust port for a tight, leakproof seal. The copper gaskets help even out the flow between the head and header flange to minimize warping. Also, they'll conform to rough or irregular surfaces to maintain a positive seal, while keeping the header bolts tight.