What is a rotating assembly and why is it important?

A rotating assembly includes the crankshaft, connecting rods, pistons, rings, and bearings. These parts work together to convert the up-and-down motion of the pistons into the rotational motion that powers your vehicle. A well-matched assembly is crucial for engine reliability and performance, especially when building a high-horsepower engine.

What specific LS engine configurations does this assembly fit?

This Manley rotating assembly is designed for LS engines that have a 4.070-inch bore and a 4.00-inch stroke. It's important to verify these dimensions on your specific LS block before ordering to ensure proper fitment.

What are the benefits of forged components in this assembly?

The crankshaft and connecting rods are made from 4340 forged steel, and the pistons are 2618 forged aluminum. Forging makes these components significantly stronger and more durable than cast parts, allowing them to withstand higher cylinder pressures and RPMs common in performance engine builds.

Specifications

Brand: Manley Performance
Part #: 29415R
UPC: 807298093253

Manley Kit - LS 415 4.070in Bore 4.00in Stroke -4cc Dish Pistons Rotating Asmbly W/Upgrade Rod Bolts

Name: Manley Kit - LS 415 4.070in Bore 4.00in Stroke -4cc Dish Pistons Rotating Asmbly W/Upgrade Rod Bolts
Brand: Manley Performance
SKU: manley-performance-manley-kit-ls-415-4-070in-bore-4-00in-stroke-4cc-dish-pistons-t14-107119
Price: 4089.29 USD
Availability: BackOrder

$4089.29

On Backorder

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

Manley Kit - LS 415 4.070in Bore 4.00in Stroke -4cc Dish Pistons Rotating Asmbly W/Upgrade Rod Bolts. A complete rotating assembly for your LS engine build.

Key Features

Fits Chevy LS engines with a 4.070-inch bore and 4.00-inch stroke.
Includes a lightweight 4340 forged steel crankshaft.
Features 4340 forged steel H-beam connecting rods with 7/16? ARP 8740 cap screws.
Comes with 2618 forged aluminum Platinum Series pistons with a -4cc dish.
Includes premium chrome moly wrist pins.
Equipped with high-performance piston rings.

This rotating assembly is designed for Chevy LS engines with a 4.070-inch bore and 4.00-inch stroke. It is not CARB approved and cannot be shipped to California.

⚠️ 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 high-performance LS engine and need a solid foundation, this Manley rotating assembly is a popular choice. It bundles together the core components that spin inside your engine block: the crankshaft, connecting rods, pistons, rings, and bearings. Getting these parts from a single, reputable manufacturer like Manley means they're designed to work together, saving you time and ensuring compatibility for your build.

This assembly features a lightweight 4340 forged steel crankshaft, which is strong enough to handle significant power increases. The 4340 forged steel H-beam connecting rods are also well-built for performance, coming with 7/16? ARP 8740 cap screws for secure attachment. Forged aluminum pistons from Manley's Platinum Series are included, featuring a -4cc dish to help achieve your desired compression ratio, and they come with premium chrome moly wrist pins. Topping it off are high-performance piston rings and high-performance Clevite 'H' Series rod bearings (narrowed) and 'P' Series main bearings, all chosen for their durability and performance under load.

This kit is designed for LS engines with a 4.070-inch bore and a 4.00-inch stroke. Please note that this assembly is not CARB approved and cannot be shipped to California. It's always a good idea to consult your engine builder or a trusted mechanic to ensure this rotating assembly is the right fit for your specific performance goals and engine combination.