Manley Rotating Assembly, SBC 355 3.480 STROKE/-4cc FLAT

The 4340 forged steel crankshaft in this Manley rotating assembly is built for serious performance, featuring a 3.480-inch stroke that’s ideal for a 355 cubic inch Small Block Chevy build. This is a well-built foundation for an engine that needs to handle significant power, whether you’re building a street/strip machine or a dedicated race motor. The crankshaft’s forged construction means it can withstand the stresses of high RPM and increased cylinder pressures that come with a performance engine.

Paired with the crankshaft are Manley’s Pro Series Lightweight I-Beam connecting rods. These rods are known for their strength and relatively light weight, helping to reduce overall assembly stress and improve engine response. They come equipped with 7/16-inch ARP 2000 cap screws, a strong fastener choice that ensures the rod caps stay securely in place under load. The pistons are Manley’s Platinum Series, made from 2618 forged aluminum. This material is chosen for its ability to handle high temperatures and pressures while maintaining its shape. They also include Premium Chrome Moly wrist pins, which are durable and designed for high-stress applications.

This assembly is rated for up to 750 horsepower when using ARP 8740 fasteners, and can handle an impressive 1,500 horsepower if you opt for the upgraded ARP 2000 cap screws on the connecting rods. Keep in mind that this assembly is not CARB approved and cannot be shipped to California. It’s a solid option for builders looking for a robust rotating assembly from a well-known performance parts manufacturer.