Eagle Specialty Products B15404E030 383ci Small Block Chevy Balanced Rotating Assembly

The Eagle Specialty Products B15404E030 is a complete balanced rotating assembly designed for 383 cubic inch small block Chevy builds with a 2-piece rear main seal. This externally balanced street and strip assembly features a 3.750" stroke crankshaft, 5.700" connecting rods, and hypereutectic pistons for excellent street performance and durability.

Complete Kit Includes:

• Cast crankshaft with 3.750" stroke
• 5.700" I-beam connecting rods with 3/8" ARP 8740 bolts
• Hypereutectic KB Claimer pistons with -12cc inverted dome, sized for 4.030" bore
• Plasma-moly standard gap piston rings
• King SI rod and main bearings
• Pioneer harmonic damper
• 168 tooth flexplate for automatic transmission applications

Specifications:

• Requires 4.030" bore
• Compatible with 2-bolt or 4-bolt main blocks
• Produces approximately 9.5:1 compression ratio with 70cc cylinder heads
• Externally balanced design
• 2-piece rear main seal configuration

This street performance rotating assembly offers the perfect balance of strength, performance, reliability, and affordability for naturally aspirated street engines running on pump gas. The hypereutectic pistons provide excellent thermal stability and wear resistance, while the forged ARP connecting rod bolts ensure durability under demanding conditions.

California Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.