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Eagle

Eagle BBC 4340 Forged Crank - 3.766 Stroke 396ci

MPN: 439637666135 Catalog #: 001596658 Category: Crankshafts Check Vehicle Fitment

Product Details

Crankshaft - 3.766 in Stroke - Internal Balance - Forged Steel - 2-Piece Seal - Big Block Chevy - Each

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.

Crankshaft must be balanced to match your specific Rods and pistons.

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 - BBCMatched variant: BBC

Big Block Chevy; 396/427/454/572

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

Product Specs

Brand
Eagle
Part Number
439637666135
Catalog Number
001596658
Product Line
Crankshafts
Category
Engines & Parts
Type
Crankshafts
UPC / Barcode
793348017006
Vendor Product Category
Engine Components
Vendor Product Subcategory
Crankshafts
Length
33.00 in
Width
9.00 in
Height
9.00 in
Weight
73.05 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 3 Available - Ready to ship
Estimated timing Usually ships within 24hrs

This item is showing available inventory. Most in-stock performance parts ship quickly, but timing can vary by warehouse, vendor cut-off time, holidays, and carrier pickup.

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: 3 available as of 6/3/2026.

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