SKU: B13005E030 / UPC: 793348624204
Eagle Chevrolet Small Block 5140 Steel I-Beam Balanced Rotating Assembly Kit
The Eagle Chevrolet Small Block 5140 Steel I-Beam Balanced Rotating Assembly Kit (SKU: B13005E030). Engineered for unmatched durability, precision, and power, this kit is the top choice for performance enthusiasts, racers, and builders seeking the best-in-class rotating assembly for their Chevy Small Block. Designed to outperform all competitors, this kit delivers exceptional strength, perfect balance, and seamless fitment, making it the premier solution for high-performance builds.
Why Eagle?
- Performance: Crafted from premium 5140 forged steel, the I-Beam connecting rods and crankshaft provide unmatched tensile strength and fatigue resistance, ensuring reliability under extreme RPMs and high horsepower applications.
- Precision Balanced: Every component is meticulously balanced to within +/- 1 gram, minimizing vibrations and maximizing engine smoothness for street, strip, or track use.
- Complete Solution: This all-in-one kit includes everything needed for a high-performance rotating assembly, saving you time and ensuring compatibility.
- Proven Durability: Trusted by professional engine builders, Eagle’s 5140 steel components are designed to withstand the rigors of racing and high-performance driving.
- Best Value: Outperforms higher-priced alternatives while offering unmatched quality, making it the smartest investment for your engine build.
Included:
The Eagle B13005E030 Rotating Assembly Kit is a comprehensive package designed for seamless installation and optimal performance. The kit includes:
- Eagle 5140 Forged Steel Crankshaft (Part No: CRS3500305057)
- Stroke: 3.480″
- Main Journal: 2.449″
- Rod Journal: 2.100″
- Internal balance design for smooth operation
- Eagle 5140 Forged Steel I-Beam Connecting Rods (Part No: CRS5700B3D)
- Length: 5.700″
- 3/8″ ARP 8740 cap screws for superior clamping force
- Set of 8 rods, bushed for full-floating piston pins
- Pistons (Part No: Dependent on bore size, specify at purchase)
- Forged pistons with valve reliefs for high-compression builds
- Available bore sizes: 4.030″, 4.040″, 4.060″ (specify at checkout)
- Includes piston rings, wrist pins, and locks
- Main Bearings (Part No: MB5293SI)
- Clevite 77 high-performance bearings for durability
- Rod Bearings (Part No: CB663H)
- Clevite 77 high-performance bearings for reduced friction
- Flexplate/Flywheel (Part No: FLY153)
- 153-tooth, internally balanced for automatic transmissions
- Harmonic Balancer (Part No: HB800)
- SFI-approved for safety and performance
- Total Seal Piston Rings (Part No: CR3690)
- High-performance rings for optimal sealing and oil control
- Complete Gasket Set (Part No: GS1000)
- Fel-Pro gaskets for reliable sealing
- Assembly Lubricant (Part No: AL200)
- Ensures proper break-in and component protection
Vehicle Fitment Data
The Eagle B13005E030 Rotating Assembly Kit is designed for the following Chevrolet Small Block engines:
- Engine Type: Chevrolet Small Block V8 (Gen I)
- Displacement: 350 CID (5.7L) base, can be modified for 355-360 CID with overbore
- Year Range: 1955-2002
- Make: Chevrolet, GMC, Pontiac, Oldsmobile, Buick
- Models:
- Chevrolet Camaro (1967-2002)
- Chevrolet Corvette (1955-2002)
- Chevrolet Chevelle (1964-1977)
- Chevrolet Nova (1962-1979)
- Chevrolet Impala (1958-1985)
- Chevrolet El Camino (1959-1987)
- Chevrolet Monte Carlo (1970-1988)
- GMC Sprint (1971-1977)
- Pontiac Firebird (1967-2002)
- Pontiac GTO (1964-1974)
- Oldsmobile Cutlass (1961-1988)
- Buick Regal (1973-1987)
- Specific Engine Fitment:
- 262, 265, 267, 283, 302, 305, 307, 327, 350 Small Block engines
- Two-piece rear main seal blocks (pre-1986)
- Compatible with 1-piece rear main seal blocks with adapter (not included)
Note: Always verify block clearance and machining requirements for your specific application. Professional installation recommended.
Performance Advantages Over The Competition!
Stronger Materials: Unlike budget kits using cast components, Eagle’s 5140 forged steel crankshaft and I-Beam rods offer superior strength-to-weight ratio, ideal for high-RPM applications.
Tighter Tolerances: Precision-machined components ensure exact fitment, reducing the need for additional machining compared to brands like Scat or Lunati.
Comprehensive Kit: Includes premium Clevite bearings, Fel-Pro gaskets, and Total Seal rings, unlike competitors that often require separate purchases.
Trusted Brand: Eagle’s reputation for quality surpasses lesser-known brands, with decades of proven performance in drag racing, circle track, and street applications.





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