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Eagle

Eagle Chevrolet 400 Forged Crankshaft

MPN: 440041256000 Catalog #: 001242810 Category: Crankshafts Check Vehicle Fitment

Product Details

Eagle Chevrolet 400 Forged Crankshaft, Eagle SBC 4340 Forged Crank - 4.125 Stroke

Forged 4340 Steel Crank - Chevrolet 400, 4.125 Stroke, INTERNAL BALANCE.

Eagle forged 4340 steel Cranks feature a non-twist forging, .125 fillet radiuses for superior strength so chamfered / narrowed bearings required, nitrided surface and micropolished. Intended for the most demanding applications.

DETAILS:

Part Number 440041256000 SPECS:

Crankshaft - 4.125 in Stroke - Internal Balance - Forged Steel - 2-Piece Seal - Small Block Chevy - Each

DETAILS:

  • Aftermarket block recommended.
  • Crankshaft must be balanced to match your specific Rods and pistons.
  • Engine Crankshaft
  • 4340 CRANK CHEVY 400 4.125 STROKE
  • ESP 4340 Crank
  • 4340 Crank

Part Number 440041256000 SPECS:

  • Balance Type: Internal
  • Crankshaft Stroke: 4.125
  • Engine Stroke: 4.125
  • Flywheel Bolt Count: 6
  • Flywheel Register Diameter: call
  • Intended Balance: internal
  • Main Journal: 2.649
  • Material: Forged 4340 Steel
  • Minimum Rod Length: 6.000
  • Pilot Bore Diameter: call
  • Prop 65 (C, R or CR): C
  • Prop 65 - Short Label: prop65_warning.jpg
  • Prop 65 Long: This product contains nickel, which is known to the State of California to cause cancer.
  • Prop 65 Yes/No: Yes
  • Rear Seal Diameter: call
  • Rod Journal Diameter: 2.1
  • Rod Journal Width: 1.900
  • Rod Journal: 2.1
  • Snout Diameter: 1.245
  • Target Bobweight: 1875g
  • Title: ESP 4340 CRANK CHEVY 400 4.125 STROKE

Eagle Chevrolet 400 Forged Crankshaft, Eagle SBC 4340 Forged Crank - 4.125 Stroke

Vehicle Fitment

Universal or product-specific fitment. Please review the product details and contact us if you need help confirming fitment before ordering.

Engine Compatibility

GM - SBCMatched variant: SBC

Small Block Chevy; 265–400ci

Fitment note: Engine compatibility is provided as a guide. Please verify all fitment details before ordering.

Product Specs

Brand
Eagle
Part Number
440041256000
Catalog Number
001242810
Product Line
Crankshafts - 8 Cyl
Category
Engines & Parts
Type
Crankshafts
UPC / Barcode
793348018607
Vendor Product Category
Engine Components
Vendor Product Subcategory
Crankshafts
Length
28.00 in
Width
9.00 in
Height
8.00 in
Weight
60.00 lb
Units Per SKU
1
Freight / LTL
No
Ship Alone
Yes
Air Restricted
No
Prop 65
Y
CARB Approved
Yes
Clearance Item
No

Shipping & Availability

Current status 8 Available - Ready to ship
Estimated timing Ships from factory

This item is showing manufacturer availability and may ship directly from the manufacturer. Tracking details are provided as soon as they become available. ETA 0-5 Days to ship.

PROP 65 WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Inventory shown: 8 available as of 6/3/2026.

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