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Eagle B15402E030 is a matched rotating-assembly package for the bore, stroke, rod length, piston configuration, and balance specification identified in this listing. Confirm the block preparation, target compression, fuel, and intended power level with the engine builder before ordering.
Key Features
- 3.480in Cast Crankshaft: 2-piece rear main seal design matches 1986+ Chevy 350 blocks, cast steel construction handles 6000+ RPM with internal balance.
- 5.700in I-Beam Rods: Press-fit wrist pins, 3/8in ARP 8740 bolts provide strength for high-torque builds without bushed pins.
- KB Hypereutectic Pistons: 4.030in bore, -7cc flat tops offer tight clearances, low thermal expansion, and durability under boost or nitrous.
- King SI Bearings: Rod and main bearings with tri-metal design reduce friction and support high-load operation.
- Requires 4.030in bore block preparation and honing to match piston specs.
- Established leader in forged connecting rods and assemblies for GM engines.
Fitment
This component is selected by engine family and exact dimensions rather than vehicle year, make, and model. Confirm the complete engine combination before ordering.
Specifications
| Manufacturer | Eagle Specialty Products |
|---|---|
| Manufacturer Part Number | B15402E030 |
| Product Type | Rotating Assemblies |
| Package Quantity | Confirm exact package contents |
| Fitment Type | Engine and dimension specific |
What's Included
- One Eagle rotating assembly in the exact listed configuration
- Manufacturer packaging and documentation supplied with the exact part number
About Eagle Specialty Products
Eagle Specialty Products manufactures performance connecting rods, crankshafts, rotating assemblies, and related bottom-end components. Selection depends on exact engine architecture, dimensions, materials, balance, and fastener requirements.
Related Eagle Products
- Eagle Chevy 350 2Pc 3.750in Crank 5.700in I-Beam Rod -5cc Flat Top 4.030in Pistons Balanced Assembly
- Eagle Chevy 350 Street & Strip Rotating Assembly 3.750in. Stroke 4.030in. Bore
- Eagle Chevy Pro Street 408 Balanced Rotating Assembly 4140 Crankshaft w/ 4340 I Beam Rods
Browse the Eagle collection for related engine internals.
Frequently Asked Questions
What components are included with Eagle B15402E030?
Contents vary by exact part number. Confirm the listed crankshaft, rods, pistons, rings, bearings, pins, locks, and balance service before ordering.
How do I confirm the correct bore and compression combination?
Match the finished cylinder bore, stroke, rod length, piston compression height, chamber volume, gasket, deck height, valve reliefs, and intended fuel with the engine builder.
Is the assembly ready to install when it arrives?
Professional inspection and measurement are still required. Verify clearances, ring gap, bearing fit, balance, fastener procedure, and block clearancing before final assembly.
Installation Instructions
Professional engine-building and machine-shop service is required. Measure every component, establish all clearances, verify balance and block preparation, follow current Eagle and fastener procedures, lubricate as specified, and rotate the assembled short block by hand before final installation and startup.
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