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Forged 4340 Steel Crankshaft for Small Block Chevy 350 2-Piece Rear Main [3.750 in. Stroke | Big Block Snout w/ 3/16 Keyway]
InfoVehicle Info Needed
EAGLEPART NUMBER: 356-4350375057B1

Forged 4340 Steel Crankshaft for Small Block Chevy 350 2-Piece Rear Main [3.750 in. Stroke | Big Block Snout w/ 3/16 Keyway]

$99999
ShippingShips on 09/22/2026
Lowest PriceLowest Price Guarantee

Chevy Small Block
Forged 4340 Steel Crankshaft
  • Small Block Chevy 350
  • Big Block Style Snout w/ 3/16 in. Keyway
  • 3.750 in. Stroke
  • 5.700 in. or Longer Rod
  • 2.100 in. Rod Journal
  • 2-Piece Rear Seal
  • Internal Balance

    The Eagle 4350375057B2N crankshaft is engineered with a Big Block Chevy snout and a 180-degree 3/16 in. keyway for additional strength when using a supercharger. Manufactured using ASME-certified 4340 non-twist steel that is nitrided and QPAC micro-polished for a superior finish and wear resistance. The 3.750-inch stroke is perfect for transforming a Chevy 350 into a 383 cubic inch displacement.

    Dimensions

    • Stroke: 3.7500 in.
    • Rod Journal: 2.100 in.
    • Rod Journal Width: 1.900 in.
    • Main Journal: 2.449 in.
    • Minimum Rod Length: 5.700 in.
    • Flywheel Bolt Holes: 6
    • Snout Diameter: 1.600 in.
    • Target Bobweight: +/- 2 Percent
    • Intended for Internal Balance
    • Recommended up to 1500 HP
    • Part TypeCrankshaft
    BrandEAGLE
    Package Height8.5
    Package Width9.0
    Package Length28.0
    Weight60.0 PG
    Part CategoryPerformance Parts
    Crankshaft MaterialForged 4340 steel
    Rod Journal Diameter2.1 in (53.3 mm)
    Main Journal Diameter2.449 in (62.205 mm)
    QuantitySold individually
    Crankshaft Snout StyleBig Block Chevy
    Main Bearings IncludedNo
    Engine BalanceInternal
    Rod Bearings IncludedNo
    Rear Main Seal Style2-piece
    BalancedNo
    Part FitmentSemi Universal
    Engine Stroke3.75 in (95.25 mm)
    Vendor Part Number4350375057B1
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

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