Holden 253 304 308 12 Point Black Oxide Intake Manifold Bolt Kit Speedmaster Chevy LS2 rotating assembly

Speedmaster Chevy LS2 rotating assembly featuring a precision-ground forged 4340 steel crankshaft

An engine with a 4340 billet steel crankshaft will rev faster and cleaner due to the different harmonics produced from the high grade material

Speedmaster braided hoses feature a partial stainless steel reinforcement within the inner braid

Try a set of these Speedmaster aluminum valve covers

open screen design

Holden 253 304 308 12 Point Black Oxide Intake Manifold Bolt Kit Speedmaster Chevy LS2 rotating assemblySpeedmaster black oxide coated chromoly intake manifold bolts are rated at 170,000 psi. They're precision machined for optimum thread engagement and have a wide area flange for better load distribution. They also feature precision rolled threads, which prevent galling, while promoting more consistent torque loading.