Chevy 454 4340 Forged Std Weight Competition Rotating Assembly 489ci

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SCATPART NUMBER: 942-1-42450

Chevy 454 4340 Forged Std Weight Competition Rotating Assembly 489ci

Name: Chevy 454 4340 Forged Std Weight Competition Rotating Assembly 489ci
Brand: SCAT
SKU: 942-1-42450
Price: 2545.04 USD
Availability: InStock

^$2,545⁰⁴$2678.99You Save$133.95

Ships on 09/21/2026

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454 Main Journals

489 Cubic Inch

4.250'' Crank Stroke

6.135'' Rod Length

1-Piece Rear Seal

489ci
4.280'' Bore
Forged Flat Top Piston
9.4:1 w/112cc; 9.3:1 w/118cc; 8.6:1 w/124cc
4.250'' Crank Stroke
6.135'' Rod Length
Unbalanced Assembly

This Unbalanced Complete Assembly Includes:
Crankshaft
Connecting Rods with Bushed Pin, ARP 7/16' x 1.400' 8740 Bolts
Piston and Piston Rings
Main & Rod Bearings
Unbalanced Assembly DOES NOT Include Flexplate and Harmonic Damper.

Part TypeEngine Rotating Assembly Kit

BrandSCAT

Package Height14.0

Package Width19.0

Package Length26.0

Weight106.0 PG

Part CategoryPerformance Parts

Crankshaft MaterialForged 4340 steel

Piston And Ring Oversize0.03 in (0.8 mm)

Main Bearing Undersize (Mm)Stock

Wrist Pin StyleFloating

Connecting Rod Beam StyleH-beam

Rod Bearing Undersize (Mm)Stock

Piston Ring Facing MaterialPlasmamoly

Piston StyleFlat top, with single valve relief

Assembly Lubricant IncludedNo

Piston Head Volume (Cc)3

Gaskets IncludedNo

Rear Main Seal Style1-piece

Main Bearing Undersize (In.)Stock

Crankshaft IncludedYes

Piston Rings IncludedYes

Bore (Mm)108.712

Actual Engine Cid489

Engine Stroke4.25 in (107.95 mm)

Connecting Rod MaterialForged 4340 steel

Pistons IncludedYes

Rod Bearing Undersize (In.)Stock

QuantitySold as a kit

Main Bearings IncludedYes

Engine BalanceExternal

Rod Bearings IncludedYes

Connecting Rods IncludedYes

Oil Pump IncludedNo

Camshaft IncludedNo

Timing Chain And Gears IncludedNo

BalancedNo

Piston MaterialForged aluminum

Cam Bearings IncludedNo

Part FitmentSemi Universal

Plastigage IncludedNo

Lifters IncludedNo

Bore4.28 in (108.712 mm)

Vendor Part Number1-42450

Package Qty1

Package TypeEA

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