Universal Chevy SBC BBC Ford SB BB Cleveland Manual Flywheel Bolt Kit (12Pt) These Speedmaster main bearings are

These Speedmaster main bearings are just what you need to freshen up your engine

a micro-switch for back-up lights and a neutral safety switch preventing accidental starts when in gear

even under the toughest of circumstances

while delivering increased engine vacuum

Designed to fit most applications with dual bolt patterns for Borg & Beck and Long-style clutch assemblies

Universal Chevy SBC BBC Ford SB BB Cleveland Manual Flywheel Bolt Kit (12Pt) These Speedmaster main bearings areThese High Performance series flywheel bolts from Speedmaster are far superior to OEM hardware. These bolts are forged from aerospace alloy and heat treated prior to thread rolling and machining. They feature an exclusive, flat, 12 point head design and a larger than stock shank diameter, for increased strength and improved register.