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Eagle Chevrolet Small Block Rotating Assembly 9.73:1 CR +.030 Bore 6in H-Beam Rods 3.75 Stroke

SKU: EAG12608030

Engine Rotating Kits

EAG Rotating Assy - 8 Cyl...

Eagle Chevrolet Small Block Rotating Assembly 9.73:1 CR +.030 Bore 6in H-Beam Rods 3.75 Stroke

SKU: EAG12608030

Engine Rotating Kits

EAG Rotating Assy - 8 Cyl...

A$5,349.70
Last Available from MFR. LAST ONE AVAILABLE from the manufacturer's distribution centre. Once sold, this item may not be immediately available again. The dispatch timeframe shown is an estimate based on historical orders for this part and is dependent on the manufacturer releasing the final available unit.
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Description

Eagle Competition Rotating Assemblies are perfect for all forms of racing use including nitrous and forced-induction.

Product Overview

Eagle Competition Rotating Assembly matches the Eagle "ESP" H-Beam Connecting Rods, 4340 Steel Crankshaft, and Premium Forged Pistons from companies like Arias, JE, and SRP. Competition Assemblies COMPLETE solution and are the perfect choice for the most demanding applications. *Street Performance Assemblies* Eagle Street Performance Assemblies offer the perfect balance of performance, reliability, and affordability for engines under 500 hp. Each kit includes a cast steel crankshaft, “SIR” I-beam connecting rods, forged or hypereutectic pistons, plasma-moly rings, and Clevite77 bearings. *Street & Strip Assemblies* Eagle Street & Strip Assemblies offer the perfect balance of performance, reliability, and affordability for engines under 500 hp. Each kit includes a cast steel crankshaft, “SIR” I-beam connecting rods, forged or hypereutectic pistons, plasmamoly rings, and Clevite77 bearings. *Pro Street Assemblies* Eagle Pro Street Assemblies offer the perfect balance of performance, reliability, and affordability for street applications where a forged 430 steel crank is desired. Each kit includes a 4340 steel crankshaft, “SIR” I-beam connecting rods, forged or hypereutectic pistons, plasma-moly rings, and Clevite77 bearings. *Competition Assemblies* Eagle Competition Assemblies offer the ultimate in strength and reliability at an affordable price. Each kit includes a 4340 steel crankshaft, H-beam rods, premium forged pistons, plasma-moly rings, and Clevite77 “H” series bearings. They are designed for internal balance. Standard bore is 4.000”. Perfect for the most demanding applications. *Forced Induction Assemblies* Eagle Competition Assemblies offer the ultimate in strength and reliability at an affordable price. Each kit includes a 4340 steel crankshaft, H-beam rods with upgrade ARP 2000 or L19 bolts, premium forged pistons designed specifically for forced induction engines, plasma-moly rings, and Clevite77 “H” series bearings. They are designed for internal balance. Perfect for extreme horsepower applications.

Product Details

Assembly Type:Competition Assembly
Bore:4.155
Comp Ratio@66cc (@76cc):10.3 (9.2)
Description:Competition Assembly; 350 Mains; Mahle -16cc Inv Dome Pistons; FF Rings
Part Number:eag12608030
Piston Brand:Mahle
Piston Type:Inverted Dome Forged 4032
Product Line:Competition
Prop 65 (C, R or CR):C
Prop 65 - Long Label:This product contains nickel, which is known to the State of California to cause cancer
Prop 65 - Short Label:prop65_warning.jpg
Prop 65 Yes/No:Yes
Rod:6.000"
Stroke:3.750"
Title:Eagle Specialty Prod. Rotating Assembly

Application Summary

CHEVY 400, 350 MAINS

Part Type

Engine Crankshaft Rotating Assembly

Data: v4.2 - Upd: 2026-10-13 18:08:58

Specifications

Product Attributes - Brand
Eagle Specialty Products
Product Attributes - Manufacturer's Part Number
12608030
Product Attributes - Part Type
Engine Rotating Kits
Product Attributes - Product Line
Eagle Competition Rotating Assemblies
Product Attributes - UPC
793348541600
Product Attributes - Actual Engine Displacement
6.7L/406
Product Attributes - Rear Main Seal Style
2-piece
Product Attributes - Bore (in.)
4.155 in.
Product Attributes - Bore (mm)
105.537mm
Product Attributes - Engine Stroke (in.)
3.750 in.
Product Attributes - Balanced
No
Product Attributes - Piston Material
Forged aluminum
Product Attributes - Piston Style
Dish, with a D-shaped cup
Product Attributes - Harmonic Balancer Included
No
Product Attributes - Flexplate Included
No
Product Attributes - Flywheel Included
No
Product Attributes - Pistons Included
Yes
Product Attributes - Piston Head Volume (cc)
+16.00cc
Product Attributes - Wrist Pin Style
Floating
Product Attributes - Piston Rings Included
Yes
Product Attributes - Piston Ring Facing Material
Plasmamoly
Product Attributes - Piston and Ring Oversize (in.)
0.030 in.
Product Attributes - Crankshaft Included
Yes
Product Attributes - Crankshaft Material
Forged 4340 steel
Product Attributes - Engine Balance
Internal
Product Attributes - Connecting Rods Included
Yes
Product Attributes - Connecting Rod Length Center to Center (in.)
6.000 in.
Product Attributes - Connecting Rod Material
Forged 4340 steel
Product Attributes - Connecting Rod Beam Style
H-beam
Product Attributes - Rod Bearings Included
Yes
Product Attributes - Rod Bearing Undersize (in.)
Stock
Product Attributes - Rod Bearing Undersize (mm)
Stock
Product Attributes - Main Bearings Included
Yes
Product Attributes - Main Bearing Undersize (in.)
Stock
Product Attributes - Main Bearing Undersize (mm)
Stock
Product Attributes - Cam Bearings Included
No
Product Attributes - Gaskets Included
No
Product Attributes - Oil Pump Included
No
Product Attributes - Camshaft Included
No
Product Attributes - Lifters Included
No
Product Attributes - Timing Chain and Gears Included
No
Product Attributes - Plastigage Included
No
Product Attributes - Assembly Lubricant Included
No
Product Attributes - Quantity
Sold as a kit.
Product Attributes - Notes
350 main journals, includes file fit piston rings.

Reference Information

Brand Name/s Eagle
StreetFX SKU eag12608030
SFX Item ID 4052751
Supplier Item Code 4052751
Manufacturer SKU 12608030
Manufacturer UPC 793348541600
Alternative References ESP-12608030, 6in

Compatibility

CHEVY 400, 350 MAINS

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