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Competition Rotating Assembly Kit [GM LS Series 403 ci]
InfoVehicle Info Needed
SCATPART NUMBER: 942-1-43806BI

Competition Rotating Assembly Kit [GM LS Series 403 ci]

$2,28759$2407.99You Save$120.40
ShippingShips on 09/15/2026
Lowest PriceLowest Price Guarantee

58 Tooth Reluctor
Rotating Assembly Competition Kit
  • GM LS Series 403 ci
  • 58-Tooth Reluctor
  • 4.005 in. Bore Mahle Forged Flat Top Pistons
  • 4.000 in. Stroke Forged Crankshaft
  • 6.125 in. Length Forged H-Beam Rods
  • Rated for 1,000 HP
  • Balanced

    Crankshaft

    • 4340 forged street crank
    • Shot peened, heat treated, precision ground, ion-nitrided
    • Throws lightened
    • Lightening holes in all rod journals
    • Large radius on all journals
    • Gun drilled mains
    • Straight shot and chamfered oil holes

    Connecting Rods

    • 4340 forged H-beam
    • Bushed wrist pin
    • 7/16 in. ARP 8740 cap screws

    Pistons

    • Mahle
    • 2618 forged aluminum
    • Flat top -4 cc volume
    • Compression ratio: 62 cc - 12.1 ; 65 cc - 11.7 ; 71 cc - 10.9
    • Coated
    • Low drag rings w/ductile iron top ring

    Bearings

    • H-Series Main and Rod bearings
    • Part TypeEngine Rotating Assembly Kit
    BrandSCAT
    Part CategoryPerformance Parts
    Part FitmentSemi Universal
    Vendor Part Number1-43806BI
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

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    Engine Stand [1000 lb. Capacity]

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    Some parts are not legal for use in California or other states with similar laws / regulations
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