AMC 390 4.000 in. Stroke, Billet Crankshaft

K1 Technologies AMC 390 Crankshaft, 4.000 in. Stroke, 2.750 .in Main Journal, 2.100 .in Rod Journal, 6 Bolt Flange Type, Billet 4340 Steel

  • Manufactured from forged or billet premium 4340 steel; Engineered specifically for high-stress racing applications; Nitrided for improved strength and bearing life; Large fillet radii for improved strength; Straight hole oiling system for improved lubrication; Size tolerances held to +/- .0001 in.

$2,545.92 $3,123.83

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K1 Technologies crankshafts are made from 4340 Billet Steel, core hardened and nitride hardened for optimum strength, increased fatigue life and minimized distortion. To help ensure consistent quality each crankshaft is magnetic particle tested to ensure it is free of flaws and journal tolerances are held to +/- .0001? to ensure consistent bearing clearances.

Additional Attributes:

GTIN: 00193564002136
Add-On: PTS581A3
Bob Weight: 1950
Crankshaft Snout Style: Standard
Engine Stroke: 4.000
Engine: 390
Flange Type: 6 Bolt
Industry: Automotive
Lightened: No
Main Bearings Included: No
Main Journal Diameter: 2.750
Make: AMC
Material: 4340 Billet Steel
Out of Stock Message: Call for Availability – 440-497-3100
Product Market: Domestic
Product Type: Crankshafts
Prop 65 – Short Label: Prop 65 Warning Label.JPG
Prop 65 (C, R or CR): CR
Prop 65 Yes/No: Yes
Rear Main Seal: 2
Reluctor Ring Included: No
Rod Bearings Included: No
Rod Diameter: 2.100
Woodruff Key Included: No

Extened Information:

Emissions : Released
Life Cycle Status: Available To Order


Quantity of Each: 1
Package UOM: EA

No Fitment Found


Weight 22.68 kg
Dimensions 9.19 × 8.19 × 28.19 in
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