Specifications
- Brand
- Eagle
- Part #
- 14138040
- UPC
- 793348012728

Eagle 4340 Forged 351 Windsor 408 Rotating Assembly Kit (Unbalanced)
$2649.06
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Eagle 4340 forged 408 rotating assembly kit for Ford 351W. Includes crank, rods, pistons, rings, and bearings for high-performance builds.
Key Features
- Fits Ford 351W engines.
- Includes a 4.000-inch stroke forged 4340 steel crankshaft.
- Comes with 6.200-inch H-beam connecting rods featuring 7/16-inch ARP 8740 bolts.
- Forged 4032 pistons with a -11cc flat top dish for a 4.040-inch bore.
- Plasma-moly file-fit piston rings allow for custom ring gap setting.
- Includes King XP rod and main bearings for critical rotating components.
⚠️ 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 Eagle rotating assembly kit gives you the core components to build a robust 408 cubic inch engine for your Ford 351 Windsor. Inside this kit, you'll find a 4.000-inch stroke forged 4340 steel crankshaft, ready to handle significant power. Paired with the crank are 6.200-inch H-beam connecting rods, which are known for their strength and reliability under stress. These rods come equipped with 7/16-inch ARP 8740 bolts, a popular choice for their holding power in high-performance applications.
The kit also includes forged 4032 pistons designed for a 4.040-inch bore, featuring a -11cc flat top dish to help achieve your desired compression ratio. You'll also get plasma-moly file-fit piston rings, giving you the flexibility to set your ring gaps precisely for optimal sealing and performance. To complete the assembly, King XP rod and main bearings are included, offering excellent durability and smooth operation for your engine's critical rotating components. This unbalanced assembly is intended for serious racing use, including applications with nitrous or forced induction.
Please note that this assembly is unbalanced, meaning it will require professional balancing by your machine shop to match your specific application and intended use. Also, this kit is not CARB approved and cannot be shipped to California. Always consult your machine shop and follow manufacturer instructions for proper installation and assembly.
Specifications
- Brand
- Eagle
- Manufacturer Part #
- 14138040
- UPC
- 793348012728
Frequently Asked Questions
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Eagle 4340 Forged 351 Windsor 408 Rotating Assembly Kit (Unbalanced)
