Tech Support / FAQ

Crankshafts:

• All Callies branded products are fully machined in the United States at the Callies manufacturing facility in Fostoria, Ohio
• Big Block Chevy, Small Block Chevy, and Big Block Mopar forgings come from Japan
• LS, LT, Small Block Ford, Gen 3 Hemi, and Godzilla forgings come from Italy
• Top Fuel and Hemi forgings are made in the United States
• Billet cranks come from Metallus (formerly TimkenSteel), in the United States
• Apex crankshafts are produced offshore using the Callies Magnum die and finished in the United States
• Compstar crankshafts are produced offshore using dies owned exclusively by Callies and finished in the United States

Connecting Rods:

• Callies Ultra rods are forged in the United States using US sourced material
• Compstar rods are produced offshore and finished in the United States

Camshafts:

• Callies camshafts are made from US sourced material and machined in the United States

Crankshafts:

• Ultra Billets: 4330 bar stock, nitride heat treat
• Magnums: 4340 forging, nitride heat treat
• Compstar domestic applications: 4340 forging
• Compstar import applications: 4340 billet

Connecting Rods:

• Callies Ultra: 4330V
• Compstar: 4340

Identifying your Callies crankshaft is a straightforward process.

Locate the serial number stamped on the face of the number one counterweight. This provides access to over two decades of manufacturing data.

Callies maintains detailed records to confirm authenticity and specifications.

For units with a serial number starting with 40000, additional technical details are available.

Call 419-435-2711 or email sales@callies.com.

• LS/LT Callies: 1.091″ to 1.094″
• LS/LT Compstar: .934″ to .950″
• Small Block Ford: 1.091″ to 1.094″
• Big Block Ford: 1.091″ to 1.094″
• Small Block Chevy: 1.091″ to 1.094″
• Big Block Chevy: 1.091″ to 1.094″
• Gen 3 Hemi: .931″ to .934″
• Big Block Mopar: .931″ to .934″

• LS/LT: M16 x 2.0 (post), M11 x 1.5
• Small Block Ford: 5/8-18, 7/16-20
• Big Block Ford: 5/8-18, 7/16-20
• Small Block Chevy: 7/16-20 (1/2-20 for BBC post), 7/16-20
• Big Block Chevy: 1/2-20, 7/16-20
• Gen 3 Hemi: M16 x 1.5, M10 x 1
• Big Block Mopar: 3/4-16, 1/2-20

Pins:

• 2.200: 2.1985 to 2.1990
• 2.123: 2.1223 to 2.1228
• 2.100: 2.0990 to 2.0995
• 2.000: 1.9990 to 1.9995
• 1.888: 1.8880 to 1.8885

Mains:

• LS/LT: 2.5583 to 2.5589
• Small Block Ford 351C: 2.7480 to 2.7485
• Small Block Ford 302: 2.2487 to 2.2492
• Big Block Ford: 2.9985 to 2.9990
• Small Block Chevy 350: 2.4480 to 2.4485
• Small Block Chevy 400: 2.6480 to 2.6485
• Big Block Chevy: 2.7470 to 2.7475
• Gen 3 Hemi: 2.5583 to 2.5589
• Big Block Mopar: 2.7490 to 2.7495

Pin end width:

• Small Block Chevy / LS1 / Small Block Ford: 0.988″
• Big Block Chevy / Big Block Ford: 1.054″
• GT-R: 0.988″

Big end width:

• GT-R: 0.895″

Thickness above the pin:

• H-Beam, Small Block Chevy / LS1 / Small Block Ford: 0.195″
• H-Beam, Big Block Chevy: 0.225″
• I-Beam, Small Block Chevy / LS1 / Small Block Ford: 0.230″
• I-Beam, Big Block Chevy / Big Block Ford: 0.245″
• LW I-Beam, Small Block Chevy: 0.195″
• GT-R: 0.200″

Stealth has been part of Callies forgings for over 25 years.

Originally used as a trade identifier, it allowed inspectors to identify crank origin.

Modern CNC advancements mean today’s crankshafts are fully machined with no as forged surfaces.

The Stealth marking still exists internally, though not always visible.

Due to variation in torque wrenches, ARP and Callies recommend using bolt stretch instead of torque.

Ultra Rods

Compstar Rods