Specifications
- Brand
- Manley Performance
- Part #
- 38555RX
- UPC
- 807298086613
Manley Rotating Assembly, BBC 555 4.250 STROKE/4.560/-3cc
$3905.93
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Manley Performance BBC 555 rotating assembly. 4.250" stroke, 4340 forged steel crank and rods. Handles up to 1500 HP.
Key Features
- Fits Big Block Chevrolet (BBC) engines.
- 4.250-inch stroke with a 4.560-inch bore and -3cc piston dish.
- Includes a 4340 forged steel crankshaft for strength.
- Comes with 4340 forged steel H-beam connecting rods.
- Connecting rods are equipped with 7/16" ARP 8740 cap screws, supporting up to 900 HP.
- Optional ARP 2000 cap screws are available for increased horsepower support up to 1,500 HP.
⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more
Product Details
This is the Manley Performance BBC 555 rotating assembly, built for serious big-block Chevrolet builds. It features a 4.250-inch stroke and is designed to work with a 4.560-inch bore, with a -3cc piston dish. This assembly is the heart of a high-performance engine, providing the foundation for significant power gains. It's a well-built package for those looking to push the limits of their BBC engine.
At its core is a 4340 forged steel crankshaft, known for its strength and durability under high stress. Paired with this are 4340 forged steel H-beam connecting rods. These rods come standard with 7/16-inch ARP 8740 cap screws, capable of handling up to 900 horsepower. For those aiming for even more power, there's an option to upgrade to ARP 2000 cap screws, which can support up to 1,500 horsepower. The pistons are Manley's Platinum Series, made from 2618 forged aluminum and include Premium Chrome Moly wrist pins, ensuring they can withstand the demands of high compression and combustion pressures.
This rotating assembly is a substantial upgrade for any performance BBC build. It's important to note that this assembly is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper assembly and torque specifications to ensure optimal performance and longevity.
Specifications
- Brand
- Manley Performance
- Manufacturer Part #
- 38555RX
- UPC
- 807298086613
Frequently Asked Questions
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Manley Rotating Assembly, BBC 555 4.250 STROKE/4.560/-3cc