Eagle Specialty Products B15405E030 Street Performance Rotating Assembly Small Block Chevy 383 CI

The Eagle Specialty Products B15405E030 is a complete balanced street performance rotating assembly designed for Small Block Chevy 350 engines with 2-piece rear main seals. This externally balanced kit is ideal for building a 383 cubic inch engine suitable for pump gas, naturally aspirated street vehicles.

Complete Assembly Includes:

• 3.750" stroke cast steel crankshaft
• 5.700" I-beam connecting rods with 3/8" ARP 8740 bolts
• Hypereutectic KB Claimer flat top pistons with -5cc dish, 4.030" bore
• Plasma-moly standard gap piston rings
• King SI rod and main bearings
• 8" Pioneer harmonic balancer
• 168-tooth flexplate

Key Specifications:

• Displacement: 383 CID (6.3L) at .030" overbore
• Bore: 4.030 inches
• Compression ratios: 11.4:1 with 58cc heads, 10.7:1 with 64cc heads, 9.4:1 with 76cc heads
• Power rating: Up to 500 horsepower
• External balance configuration
• 2-piece rear main seal design

Eagle Street & Strip rotating assemblies are professionally balanced and deliver exceptional value for street performance applications. This kit provides the perfect balance of strength, reliability, and affordability for high-performance Small Block Chevy builds. Not recommended for nitrous oxide applications.