Eagle 524104155 Pontiac Street Strip Rotating Assembly CID Stroke Engine Connecting Rod Set - 400 461 4.250

The Eagle 524104155 is a complete street and strip rotating assembly kit designed for Pontiac 400 engine builds. This comprehensive kit displaces 461 cubic inches and features quality components engineered for naturally aspirated street performance applications producing under 700 horsepower.

Complete Assembly Includes:

• Cast steel crankshaft with 4.250-inch stroke
• Forged 5140 steel I-beam connecting rods, 6.800-inch length with 7/16-inch ARP 8740 rod bolts
• Mahle 4032 forged aluminum pistons, 4.155-inch bore (.035 oversize), -6cc flat top design
• Plasma-moly file-fit piston rings
• King performance street rod and main bearings

Key Specifications:

• Displacement: 461 cubic inches
• Bore: 4.155 inches (.035 oversize from standard 4.120-inch Pontiac 400 bore)
• Stroke: 4.250 inches
• Rod length: 6.800 inches
• Compression ratio: 11.0:1 with 75cc chambers, 10.1:1 with 85cc chambers, 8.3:1 with 111cc chambers
• Rod journal: 2.200 inches
• Main journal: 3.000 inches
• Wrist pin diameter: 0.990 inches

This assembly is designed for internal balance configuration and requires professional machine shop balancing before installation. Note that this kit is not compatible with 1967 Pontiac 400 blocks due to factory cylinder reliefs. Perfect for serious Pontiac enthusiasts building a reliable stroker engine for street or street/strip applications.