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Chevy 454 4340 Forged Std Weight Competition Rotating Assembly 540ci
InfoVehicle Info Needed
SCATPART NUMBER: 942-1-42375BI

Chevy 454 4340 Forged Std Weight Competition Rotating Assembly 540ci

$3,12099
ShippingShips on 11/24/2026
Lowest PriceLowest Price Guarantee

Items You Need

Engine Assembly Lube [4 oz. Bottle]

JEGS

Engine Assembly Lube [4 oz. Bottle]

Part Number : 555-28000
$599$6.99
You Save$1.00
Plastigauge Kit

JEGS

Plastigauge Kit

Part Number : 555-80593
$1499$16.99
You Save$2.00
Piston Ring Filer & Grinder Tool 170/140 Grit

JEGS

Piston Ring Filer & Grinder Tool 170/140 Grit

Part Number : 555-80514
$4199$46.99
You Save$5.00
7/16" Rod Bolt Extensions

ARP

7/16" Rod Bolt Extensions

Part Number : 070-910-0004
$3999

454 Main Journals
  • 540 Cubic Inch
  • 4.250'' Crank Stroke
  • 6.385'' Rod Length
  • 2-Piece Rear Seal
      • Chevy 454 4340 Forged Std Weight Competition Rotating Assembly
    • 540ci
    • 4.500'' Bore
    • Forged Dish Piston
    • 8.7:1 w/112cc; 8.4:1 w/118cc; 8.2:1 w/124cc
    • 4.250'' Crank Stroke
    • 6.385'' Rod Length
    • Internal Balanced Assembly


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

    Scat rotating assembly component parts are designed for the ultimate in performance. They take the ''guess work'' out of engine assemblies, just wash, Q.C. and assemble.

    Complete Assembly Includes:

      • 4340 Forged Standard Weight Crankshaft Without Center Counterweights
    Show More
    • Pro Sport 4340 Forged H-Beam Connecting Rods with ARP 8740 7/16'' x 1.400'' Cap Bolts, Bushed Pin
    • Forged or Premium Forged Pistons with Piston Rings
    • Main and Connecting Rod Bearings
    • External Balanced Rotating Assemblies Include Flexplate and Harmonic Damper
    • Internal Balanced Rotating Assemblies DO NOT Include Flexplate and Harmonic Damper
    • Unbalanced Rotating Assemblies DO NOT Include Flexplate and Harmonic Damper
    • Crank/Rod/Piston Kits DO NOT Include Piston Rings, Main and Connecting Rod Bearings, Flexplate or Harmonic Damper
    Part TypeEngine Rotating Assembly Kit
    Product LineScat Chevy Big Block 4340 Forged Standard Weight Competition Rotating Assembly
    BrandSCAT
    Package Height13.0
    Package Width18.0
    Package Length29.0
    Weight90.0 PG
    Part CategoryPerformance Parts
    Crankshaft MaterialForged 4340 steel
    Piston And Ring OversizeStock
    Main Bearing Undersize (Mm)Stock
    Wrist Pin StyleFloating
    Connecting Rod Beam StyleH-beam
    Rod Bearing Undersize (Mm)Stock
    Piston Ring Facing MaterialPlasmamoly
    Piston StyleDish, with a D-shaped cup
    Assembly Lubricant IncludedNo
    Piston Head Volume (Cc)28
    Gaskets IncludedNo
    Rear Main Seal Style2-piece
    Main Bearing Undersize (In.)Stock
    Crankshaft IncludedYes
    Piston Rings IncludedYes
    Actual Engine Cid540
    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 BalanceInternal
    Rod Bearings IncludedYes
    Connecting Rods IncludedYes
    Oil Pump IncludedNo
    Camshaft IncludedNo
    Timing Chain And Gears IncludedNo
    BalancedYes
    Piston MaterialForged aluminum
    Cam Bearings IncludedNo
    Part FitmentSemi Universal
    Plastigage IncludedNo
    Lifters IncludedNo
    Bore4.5 in (114.3 mm)
    Vendor Part Number1-42375BI
    Package Qty1
    Package TypeEA
    Some parts are not legal for use in California or other states with similar laws / regulations
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