Eagle B13102E040 Street & Strip Rotating Assembly Kit - Chevy 305/336 CID Stroker

The Eagle B13102E040 is a complete balanced rotating assembly designed for small block Chevrolet 305 engines, delivering reliable performance for street and strip applications producing under 500 horsepower. This stroker kit transforms a standard 305 into a 336 cubic inch powerplant, providing increased displacement and torque for naturally aspirated, pump gas engines.

Complete Assembly Includes:

• Eagle cast steel crankshaft with 3.750-inch stroke for increased displacement
• Eagle SIR (Super I-beam Rod) 5.700-inch I-beam connecting rods with 3/8-inch ARP 8740 bolts
• Keith Black hypereutectic aluminum pistons with -10cc inverted dome design, 3.776-inch bore
• Plasma-moly standard gap piston rings by Hastings
• King SI rod and main bearings

Key Features:

• Factory balanced by Eagle - no additional balancing required
• Designed for 2-piece rear seal applications
• Compatible with 58cc, 64cc, and 76cc cylinder heads
• Compression ratios: 10.1:1 (58cc), 9.4:1 (64cc), 8.4:1 (76cc) at 0.040-inch overbore
• Premium ARP connecting rod bolts for superior strength and reliability

This assembly is ideal for hot street vehicles, weekend warriors, and entry-level competition use where durability and value are priorities. Eagle's cast steel crankshaft features improved fillet radiuses for enhanced strength over OEM cranks, while the hypereutectic pistons offer excellent wear resistance and thermal stability.