Specifications
- Brand
- Eagle
- Part #
- 12121000
- UPC
- 793348064840

Eagle Chevy 350 1Pc 3.750in Crank 5.700in H-Beam -10cc 4.000in Pistons Rotating Assembly
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Eagle Chevy 350 1Pc 3.750in Crank 5.700in H-Beam -10cc 4.000in Pistons Rotating Assembly.
Key Features
- Fits Chevy 350 engines.
- Features a 3.750-inch stroke, one-piece rear main seal forged steel crankshaft.
- Includes 5.700-inch long H-beam connecting rods for strength.
- Comes with 4.000-inch bore pistons designed for a -10cc combustion chamber volume.
- Results in a 383 cubic inch displacement when installed in a 400 block or a 4.000" bore 350 block.
- The assembly is balanced from the factory for smoother operation.
Product Details
If you're rebuilding a Chevy 350 engine and looking to push its performance limits, a well-balanced rotating assembly is the heart of the operation. This Eagle assembly is built around a 3.750-inch stroke crankshaft, designed to work with 4.000-inch bore pistons, giving you a 383 cubic inch displacement when installed in a standard 400 block or a 350 block with a 4.000 inch bore. This setup is a popular choice for those aiming for increased power and torque from their small-block Chevy.
The core of this assembly is Eagle's one-piece rear main seal crankshaft, forged from durable steel for strength under demanding conditions. Paired with it are 5.700-inch long H-beam connecting rods, known for their robust construction and ability to handle higher horsepower applications. The included pistons are designed for a -10cc combustion chamber volume, which helps achieve a specific compression ratio depending on your cylinder head volume. This assembly comes balanced, saving you a significant step and ensuring smooth operation once installed. It's a solid foundation for a performance street or strip engine build.
When assembling your engine, pay close attention to ring gap, bearing clearances, and piston-to-valve clearance, especially with the increased stroke. This rotating assembly is a critical component for achieving your engine's power goals. It's important to note that this assembly is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's detailed installation instructions for proper assembly and torque specifications.
Specifications
- Brand
- Eagle
- Manufacturer Part #
- 12121000
- UPC
- 793348064840
Frequently Asked Questions
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