What is the primary advantage of a forged steel crankshaft?

A forged steel crankshaft, like the 4340 unit in this assembly, is significantly stronger and more durable than a cast crankshaft. This makes it better suited to handle the higher stresses and power output of performance and racing engines.

What type of bearings are included in this rotating assembly?

This kit includes high-performance Clevite 'H' Series rod bearings, which are narrowed for a precise fit, and 'P' or 'H' Series main bearings. These are chosen for their ability to handle the demands of performance applications.

Are there any specific installation considerations for this assembly?

Given the performance nature of this rotating assembly, it is highly recommended to consult with a professional engine builder or refer to Manley's detailed installation instructions. Proper balancing and clearance checks are critical for optimal performance and longevity.

Specifications

Brand: Manley Performance
Part #: 39395H
UPC: 807298114774

Manley Rotating Assembly, KIT-FORD 351C 3.850/4.040

Name: Manley Rotating Assembly, KIT-FORD 351C 3.850/4.040
Brand: Manley Performance
SKU: manley-performance-manley-rotating-assembly-kit-ford-351c-3-850-4-040-t14-881425
Price: 5152.26 USD
Availability: BackOrder

$5152.26

On Backorder

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

Manley Performance Ford 351C Rotating Assembly. Built with a 4340 forged steel crankshaft for serious performance builds.

Key Features

This rotating assembly fits Ford 351 Cleveland engines with a 3.850-inch stroke and 4.040-inch bore.
Features a 4340 forged steel crankshaft for enhanced strength and durability.
Includes Pro Series I-Beam lightweight connecting rods with 7/16-inch ARP 2000 cap screws.
Comes with 2618 forged aluminum Platinum Series pistons and premium chrome moly wrist pins.
Equipped with high-performance piston rings for optimal sealing.
Includes high-performance Clevite 'H' Series rod bearings (narrowed) and 'P' or 'H' Series main bearings.

This rotating assembly is designed for Ford 351 Cleveland engines. 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

Starting with a 4340 forged steel crankshaft means this Manley rotating assembly is built for serious power. This isn't just a stock replacement; it's a foundation for a high-performance engine build, specifically designed for Ford 351 Cleveland applications with a 3.850-inch stroke and 4.040-inch bore.

You'll find Pro Series I-Beam connecting rods included, which are lightweight yet incredibly strong. They come standard with 7/16-inch ARP 2000 cap screws, a detail that speaks to the quality and reliability Manley aims for. The pistons are forged from 2618 aluminum, part of their Platinum Series, and come with premium chrome moly wrist pins. These pistons are designed to handle the stress of performance driving, paired with high-performance piston rings to ensure a good seal.

To round out this comprehensive kit, Manley includes high-performance Clevite 'H' Series rod bearings, which are narrowed for a precise fit, along with either 'P' or 'H' Series main bearings. This assembly is a well-built package for anyone looking to rebuild or significantly upgrade their Ford 351 Cleveland engine. Please note that this assembly is not CARB approved and cannot be shipped to California.