Auto Barn
Est. 1957
Manley Performance

Manley Rotating Assembly, BBC 615 4.625 STROKE/4.600/+43cc

$4057.01

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Manley BBC 615 rotating assembly with 4.625" stroke. Built for high-horsepower BBC builds, handling up to 1500 HP.

Key Features

  • Fits Big Block Chevrolet (BBC) engines.
  • Features a 4.625 inch stroke for a 615 cubic inch displacement with a 4.600 inch bore and +43cc chambers.
  • Includes a 4340 forged steel crankshaft for strength and durability.
  • Comes with 4340 forged steel H-beam connecting rods.
  • Connecting rods are equipped with 7/16? ARP 8740 cap screws, supporting up to 900 horsepower.
  • Optional ARP 2000 cap screws can be selected for builds up to 1,500 horsepower.
This rotating assembly is designed for Big Block Chevrolet (BBC) engines. Check manufacturer specifications to confirm compatibility with your specific engine block and bore size.

⚠️ 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

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About this part

Product Details

If you're building a serious big-block Chevrolet engine and need a foundation that can handle serious power, a complete rotating assembly like this one from Manley Performance is a smart way to go. This assembly is designed for BBC (Big Block Chevrolet) applications and features a 4.625 inch stroke, giving you a 615 cubic inch displacement when paired with a 4.600 inch bore and +43cc combustion chambers. It's a well-built package that takes the guesswork out of matching critical internal engine components.

At the heart of this assembly is a 4340 forged steel crankshaft, chosen for its strength and durability under high stress. Paired with it are 4340 forged steel H-beam connecting rods. These rods come standard with 7/16? ARP 8740 cap screws, a solid choice for builds up to 900 horsepower. If your build is pushing the limits and you need more, you can opt for ARP 2000 cap screws, which allow this assembly to handle up to 1,500 horsepower. The pistons are Manley's Platinum Series, made from 2618 forged aluminum for a good balance of strength and light weight, and they include premium chrome moly wrist pins.

This rotating assembly is a significant investment in your engine's performance potential. It's important to note that this part is not CARB approved and cannot be shipped to California. Always refer to Manley's installation guidelines and consult with your engine builder to ensure proper assembly and break-in procedures for your specific application.

Specifications

Brand
Manley Performance
Manufacturer Part #
39615X
UPC
807298093369

Frequently Asked Questions

Manley Rotating Assembly, BBC 615 4.625 STROKE/4.600/+43cc

$4057.01