Chevy BBC 396 454 High Performance 12 Point Main Bolt Kit These Speedmaster expansion tanks are

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

stainless steel alloy and are carefully designed to increase gas flow for more power

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

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

Add a cool new look to your ride and lower your curb weight with Speedmaster control arms

Chevy BBC 396 454 High Performance 12 Point Main Bolt Kit These Speedmaster expansion tanks areSpeedmaster 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