Chevy BBC 396 454 High Performance 12 Point Main Bolt Kit Speedmaster rocker arm adjusting nuts

Speedmaster rocker arm adjusting nuts are high-quality polylocks designed for full roller rocker arms

Speedmaster gilmer drive-style crankshaft pulley spacers are specifically designed to help achieve proper belt alignment

These Speedmaster expansion tanks are perfect for cars with low-mount radiators to provide a convenient filling location and to bleed off unwanted air

They feature aluminum construction and provide double rate cooling due to the double pass design

Speedmaster offers these great 2-piece chrome valve cover wing nuts to allow you to fasten your valve covers in style

Chevy BBC 396 454 High Performance 12 Point Main Bolt Kit Speedmaster rocker arm adjusting nutsSpeedmaster engine hardware are premium grade, race quality componets that are created from aircraft quality 8740 high tensile strength chromoly steel, withstanding up to 190,000 PSI . They are ground and thread rolled after heat treatment to ensure the exacting tolerances that Speedmaster requires for all of their fasteners. This ensures strength and consistent torque readings. All kits come complete with 4130 heat treated, parallel ground washers