Specifications
- Brand
- Manley Performance
- Part #
- 290740RHX
- UPC
- 807298115214

Manley Rotating Assembly, SBC 355 3.480 STROKE/-4cc FLAT
$3480.92
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Manley Rotating Assembly, SBC 355 3.480 STROKE/-4cc FLAT. Includes forged crank, rods, and pistons for a complete engine build.
Key Features
- This kit includes a lightweight 4340 forged steel crankshaft, 4340 forged steel H-beam connecting rods with 7/16? ARP 8740 cap screws, and 2618 forged aluminum Platinum Series pistons with premium chrome moly wrist pins.
- The 4340 forged steel crankshaft is built for strength and reduced weight.
- Connecting rods are 4340 forged steel H-beam design for durability.
- Pistons are 2618 forged aluminum, known for their strength and heat resistance.
- Includes premium chrome moly wrist pins for reliable piston-to-rod connection.
- Rated for up to 750 horsepower with the included ARP 8740 fasteners.
⚠️ 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 Manley rotating assembly gives you the core components for a robust SBC 355 engine build. Inside this kit, you'll find a lightweight 4340 forged steel crankshaft, a set of 4340 forged steel H-beam connecting rods fitted with 7/16? ARP 8740 cap screws, and 2618 forged aluminum Platinum Series pistons complete with premium chrome moly wrist pins. This is a well-built package designed to handle serious power.
The 4340 forged steel construction for both the crankshaft and connecting rods means these parts are strong and can withstand the stresses of high-performance operation. The H-beam design of the rods offers excellent strength-to-weight ratio, making them a popular choice for builds that push the limits. The Platinum Series pistons are also forged from 2618 aluminum, a material known for its durability and ability to handle high temperatures and pressures. The inclusion of premium chrome moly wrist pins ensures reliable connection between the piston and rod.
This assembly is rated for up to 750 horsepower when using the standard ARP 8740 fasteners. If your build demands even more, you have the option to upgrade to ARP 2000 cap screws, which can support up to 1,500 horsepower. Please note that this assembly is not CARB approved and cannot be shipped to California. It's a solid foundation for a powerful engine, but be sure to check local emissions regulations.
Specifications
- Brand
- Manley Performance
- Manufacturer Part #
- 290740RHX
- UPC
- 807298115214
Frequently Asked Questions
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Manley Rotating Assembly, SBC 355 3.480 STROKE/-4cc FLAT
