ARP Pontiac 400-455 4-Bolt Main Stud Kit

If you're rebuilding the bottom end of a Pontiac 400 or 455 engine, especially one that's going to see some serious use, you'll want to make sure those main caps are held down tight. This 4-bolt main stud kit from ARP is designed specifically for those Pontiac V8s, offering a significant upgrade over the factory bolts.

ARP is well-known for making strong fasteners, and these main studs are no exception. They're made from a proprietary ARP material that's heat-treated for increased tensile strength. This means they can handle more clamping force than stock bolts, which is crucial for preventing main cap walk and maintaining proper crankshaft alignment under high loads. The kit includes all the necessary studs, nuts, and washers, and they're designed to fit right into the factory main cap locations.

When you're putting a lot of power through your engine, the stresses on the bottom end are immense. Using these ARP studs helps ensure the integrity of your crankshaft and main bearings. Always follow the manufacturer's torque-to-yield specifications and lubrication guidelines during installation to get the most out of these well-built studs.