Callies Magnum Crankshafts for Big Block Ford (BBF)

Callies manufacturers high quality “Made in the USA” Magnum crankshafts for the Big Block Ford. These crankshafts are machined from high quality SAE 4340 Steel Forgings that are Ultra-Case heat-treated and metallurgically certified at Callies. Magnum Ford Cranks are counterweighted to balance bob weights up to 2400 grams without the use of heavy metal. Magnum Crankshafts easily withstand the rigors of a 2,000 HP engine.

• Avg. Weight – 78 lbs for a 4.750″
• 429 Boss Length Post 3.018
• Gun Drilled Mains
• All Rod Journals Lightened – 2.200″ Diameter
• Stroke Availability 4.150″, 4.300″, 4.500″, 4.750″
• Single 3/16 (Align- Ease) Keyway with Lead in Witness Mark
• Short Damper Fit (High Performance Style)
• Ultra-Case Heat Treatment
• Full Internal Balance