Eagle Pontiac 400 4.250in Crank 6.800in I-Beam Rods -22cc 4.185in Pistons Rotating Assembly

If you're rebuilding the heart of your Pontiac 400 for serious naturally-aspirated racing, this Eagle Pro Street rotating assembly is a solid foundation. It's designed to handle the demands of competition where every ounce of performance counts. This kit brings together key components that work in harmony to create a strong, reliable powerhouse for your build.

At the core of this assembly is a 4.250-inch forged 4340 crankshaft, chosen for its strength and durability under high stress. Paired with this are 6.800-inch I-beam connecting rods, also made from robust 4340 steel, and secured with 7/16-inch ARP 8740 bolts. These rods are built to withstand the intense forces generated during racing. The kit includes 4.185-inch Mahle pistons with an inverted dome design, featuring a -22cc dish. These pistons are made from forged 4032 aluminum, known for its good thermal expansion properties, and come with plasma-moly file-fit rings, allowing for precise ring gap setting. To ensure smooth operation and longevity, the assembly is completed with King XP rod and main bearings.

This rotating assembly is a comprehensive package for those looking to maximize the performance of their Pontiac 400 engine in a racing environment. Please note that this assembly is not CARB approved and cannot be shipped to California. It also carries a Prop 65 warning.