Custom Callies ULTRA Billet LS Crankshaft Main Diameter:2.750 The Big M is for

The Big M is for you

6 blade TCT BatMoWheel

Our Whipple builds will

2618 material for High HP-NOS-Boost applications

Custom Callies ULTRA Billet LS Crankshaft Main Diameter:2.750 The Big M is forThis is the crank we use when going after BIG POWER. Callies Ultra billets are machined from Premium Grade (Para Pure) Timken alloy steel. From the raw materials, through the foundry to Callies' plant in Fostoria Ohio, these crankshafts are 100% MADE in USA. This high quality Timken steel alloy has been formulated to create a level of toughness that is unmatched in the crankshaft industry. The fully counter weighted design and Callies' heat treatment