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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$5,499.29
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 Chevrolet Small Block Rotating Assembly 9.73:1 CR +.030 Bore 6in H-Beam Rods 3.75 Stroke

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

Additional Information

3.750" Forged 4340 Crank,6.000" H-BEAM Rods,7/16" ARP 8740 BOLTS,Forged 4032 MAHLE -16CC INVERTED DOME 4.155" PISTONS,PLASMA-MOLY FILE-FIT RINGS,KING XP Rod/MAIN BEARINGS.

Application Summary

CHEVY 400, 350 MAINS

Part Type

Engine Crankshaft Rotating Assembly

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.


Data: v2 - Desc: v4.2 - Upd: 2026-11-07 20:03:32

Data: v4.2 - Upd: 2026-11-09 04:05:38

Features

Note for Pistons, Rings, Rotors, Rods and engine internals

Unless otherwise specified, some brands supply brake rotors, pistons, strut mounts, rods and rings separately. In some cases, titles may indicate plural, or 'set' - eg the term “ring set” often refers to the rings for a single piston only. If you’re unsure about what’s included with this product, please contact our team for clarification.

(keyword: rods)

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

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
Rod:6.000"
Stroke:3.750"
Title:Eagle Specialty Prod. Rotating Assembly

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Eagle, Eagle Specialty Products
StreetFX SKU eag12608030
SFX Item ID 4052751
Accounting SKU eag-12608030
Manufacturer SKU 12608030
Manufacturer UPC 793348541600
Alternative References ESP-12608030

Engine Rotating Assembly, Competition, Forged Crank, Forged Pistons, H-Beam Rods, Chevy, Small Block, Kit

Eagle competition rotating assemblies consist of name-brand quality components for a wide range of engines at an affordable price. Depending upon your selection, these kits may feature a crankshaft, pistons, piston rings, rod and main bearings, or connecting rods. Balanced assemblies are also available. Order the model designed for fitment on your year/make vehicle and engine application.

Product Attributes
BrandEagle Specialty Products
Manufacturer's Part Number12608030
Part TypeEngine Rotating Kits
Product LineEagle Competition Rotating Assemblies
UPC793348541600
Actual Engine Displacement6.7L/406
Rear Main Seal Style2-piece
Bore (in.)4.155 in.
Bore (mm)105.537mm
Engine Stroke (in.)3.750 in.
BalancedNo
Piston MaterialForged aluminum
Piston StyleDish, with a D-shaped cup
Harmonic Balancer IncludedNo
Flexplate IncludedNo
Flywheel IncludedNo
Pistons IncludedYes
Piston Head Volume (cc)+16.00cc
Wrist Pin StyleFloating
Piston Rings IncludedYes
Piston Ring Facing MaterialPlasmamoly
Piston and Ring Oversize (in.)0.030 in.
Crankshaft IncludedYes
Crankshaft MaterialForged 4340 steel
Engine BalanceInternal
Connecting Rods IncludedYes
Connecting Rod Length Center to Center (in.)6.000 in.
Connecting Rod MaterialForged 4340 steel
Connecting Rod Beam StyleH-beam
Rod Bearings IncludedYes
Rod Bearing Undersize (in.)Stock
Rod Bearing Undersize (mm)Stock
Main Bearings IncludedYes
Main Bearing Undersize (in.)Stock
Main Bearing Undersize (mm)Stock
Cam Bearings IncludedNo
Gaskets IncludedNo
Oil Pump IncludedNo
Camshaft IncludedNo
Lifters IncludedNo
Timing Chain and Gears IncludedNo
Plastigage IncludedNo
Assembly Lubricant IncludedNo
QuantitySold as a kit.
Notes350 main journals, includes file fit piston rings.

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