Auto Barn
Est. 1957
Manley Performance

Manley Rotating Assembly, SBC 434 4.000 STROKE/-20cc DISH

$3618.65

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Manley Rotating Assembly, SBC 434 4.000 STROKE/-20cc DISH. This assembly includes a forged steel crankshaft, connecting rods, and pistons.

Key Features

  • This rotating assembly includes a lightweight 4340 forged steel crankshaft.
  • It comes with 4340 forged steel H-beam connecting rods.
  • The connecting rods feature 7/16? ARP 8740 cap screws, with an option for ARP 2000 cap screws for higher horsepower applications.
  • Included are 2618 forged aluminum Platinum Series pistons with a -20cc dish.
  • Premium Chrome Moly wrist pins are included with the pistons.
  • This assembly is rated for up to 750 horsepower with ARP 8740 cap screws and up to 1,500 horsepower with optional ARP 2000 cap screws.
This is a universal rotating assembly for Small Block Chevy engines. Check manufacturer specifications to confirm compatibility with your specific engine build.

⚠️ 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

Secure CheckoutFast Shipping631-982-0042
About this part

Product Details

When you're building a serious Small Block Chevy, starting with a well-built rotating assembly is key. This Manley Performance rotating assembly gives you the core components needed for a 434 cubic inch engine with a 4.000-inch stroke. You get a lightweight 4340 forged steel crankshaft, 4340 forged steel H-beam connecting rods, and 2618 forged aluminum pistons. This combination is designed to handle significant power, with a horsepower range of up to 750 using the standard ARP 8740 cap screws on the rods, or up to 1,500 horsepower if you opt for the ARP 2000 cap screws.

The 4340 forged steel crankshaft and H-beam connecting rods are strong choices for high-performance applications, offering excellent durability and resistance to bending or breaking under stress. The 2618 forged aluminum pistons are a popular choice for their strength and ability to withstand high temperatures and pressures. These pistons feature a -20cc dish, which will affect your final compression ratio depending on your cylinder head volume. The included Premium Chrome Moly wrist pins are also well-suited for the demands of a performance engine build.

This assembly is a solid foundation for a powerful engine build. Keep in mind that this part is not CARB approved and cannot be shipped to California. Always refer to Manley's installation instructions for proper assembly and torque specifications to ensure the longevity and performance of your new rotating assembly.

Specifications

Brand
Manley Performance
Manufacturer Part #
290230RH
UPC
807298080116

Frequently Asked Questions

Manley Rotating Assembly, SBC 434 4.000 STROKE/-20cc DISH

$3618.65