Eagle Pontiac 400 4.250in Crank 6.800in I-Beam Rods -22cc 4.155in Pistons Rotating Assembly

If you're building a serious Pontiac 400 engine for racing, a strong rotating assembly is the heart of the operation. This Eagle Competition Rotating Assembly is designed to handle the demands of competition, whether you're running naturally aspirated, nitrous, or forced induction setups. It includes a forged 4340 crankshaft with a 4.250-inch stroke, paired with 6.800-inch H-beam connecting rods secured by 7/16-inch ARP 8740 bolts. This combination is built for strength and reliability under high stress.

The assembly also features Mahle 4.155-inch forged pistons with an inverted dome design, offering -22cc volume for specific compression ratio tuning. These pistons come with plasma-moly file-fit rings, allowing for precise ring gap adjustment to match your engine's build and intended use. To ensure smooth operation and durability, the kit includes King XP rod and main bearings, known for their robust performance in demanding applications. This is a well-built package for anyone serious about maximizing their Pontiac 400's potential in a racing environment.

When assembling a high-performance engine like this, attention to detail is key. Ensure all components are properly cleaned and inspected before installation. Refer to the manufacturer's detailed instructions for proper assembly procedures, torque specifications, and ring gap settings to achieve optimal performance and longevity from this competition-grade rotating assembly.