Eagle Competition Assemblies
Eagle Competition Assemblies offer the ultimate in strength and reliability at an affordable price.
Part Type: Rotating Assembly
Application: Chev SB (421) 400 Main
Deck Height: 9.025"
Main Bearing Type: 400
** Also Available with 350 Mains
Bore: 4.155"
Stroke: 3.875"
Actual Cubic Inch: 420
Crankshaft: Eagle 4340 Forged Steel
Pistons: Mahle Forged 4032 Aluminum
Piston Dome Type/Volume: Flat Top / -5cc
Compression: 11.3 w/64cc, 10.0 w/76cc
Piston Pins: Included
Connecting Rods: 6.000" Eagle 4340 H-Beam Rods w/ 7/16" ARP 8740 Capscrew
Rings: Plasma Moly (File Fit)
Rod Bearings: King Pro-Series
Main Bearings: King Pro-Series
Balanced: No
Flexplate Included: No
Harmonic Balancer Included: No
Manufacturer: Eagle Specialty Products
Manufacturer's Part Number: 12132030
Quantity: Sold as Kit
Note: Intended for internal balancing
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