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SKU: B15455E030 | UPC: 793348805924
Eagle Chevy 350 1955-1997 2Pc 3.750in Crank 5.700in I-Beam Rod -5cc Flat Top 4.030in Pistons Balanced Assembly
This complete balanced rotating assembly from Eagle builds a reliable 383 cubic inch stroker in Chevy Small Block 350 engines from 1955 to 1997 using 2-piece rear main seal blocks bored to 4.030 inches. It includes a 3.750 inch cast crankshaft, forged I-beam rods, hypereutectic pistons, rings and bearings for consistent power delivery and high RPM durability. Ideal for street performance or mild racing applications in trucks, cars and muscle vehicles.
Key Features
- 3.750in Cast Crankshaft: 2-piece rear main seal design with external balance, factory machined for smooth rotation and long-term strength in 383 stroker builds
- 5.700in I-Beam Rods: Forged steel construction with 3/8in ARP 8740 bolts rated for 450+ horsepower, full-floating .927in pins for reduced reciprocating mass
- KB Hypereutectic -5cc Flat Top Pistons: 4.030in bore with .003in clearance, 10.5:1 compression ratio using 64cc heads and .040in gasket, lightweight for quick revving
- Plasma-Moly Rings: Standard gap 5/64in top, 5/64in second, 3/16in oil, pre-gapped for .030/.030/.060 hone sizes ensuring tight seal and low oil consumption
- King SI Bearings: Tri-metal rod and main bearings with tight tolerances for minimal friction, oil clearance and spin-free performance under load
Product Notes
- Factory balanced assembly. do not mix components with other parts
- Requires block machined to 4.030in bore and clearance for 3.750in stroke
- Packs in protective box with foam inserts to prevent shipping damage
Installation Notes
- Professional installation recommended.
- Verify piston-to-valve clearance with camshaft lift over .450in
- Uses standard SBC mains and 6-bolt rod caps. torque to ARP specs
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1967-1987 | Chevrolet | C/K Pickup | 350 V8 |
| 1969-1981 | Chevrolet | Camaro | Base/Z28/RS 350 V8 |
| 1965-1982 | Chevrolet | Corvette | Base/Stingray 350 V8 |
| 1964-1991 | Chevrolet | Impala | 350 V8 |
| 1968-1976 | Chevrolet | Nova | Base/SS 350 V8 |
| 1962-1975 | Chevrolet | Bel Air/Biscayne | 350 V8 |
Why Choose Eagle?
- Over 30 years crafting crankshafts and rods for domestic V8 engines
- Assembles name-brand parts like ARP, KB and King for dependable operation
- Laser-etched markings and CNC balancing ensure exact assembly tolerances
Frequently Asked Questions
-
Q: Does this fit 1-piece rear main seal blocks?
A: No, this 2-piece crankshaft fits 1955-1985 SBC blocks only. 1986+ one-piece requires different kit -
Q: What pistons and rings are included?
A: KB hypereutectic flat top 4.030in pistons with -5cc volume and plasma-moly file-fit rings in standard gap configuration -
Q: Is professional balancing needed after purchase?
A: No, full rotating assembly arrives balanced with flexplate matching. add flywheel or harmonic balancer separately if needed
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Single sturdy box 27.75 x 17.75 x 11.75 inches
- Weight: 78 lbs
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