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Ductile Iron sleeves and extra thick walls prevent cracking and produce excellent ring seal
Callies Ultra Connecting Rods - H-Beam or I-Beam Enforcer
Center discharge port for better cylinder to cylinder distribution then other twin-screws with cobbled together billet adapters and forward facing discharge
Our original recipe combined a Holley Lo-Ram intake with 417 Motorsports' largest size intercooler
6 blade TCT BatMoWheel
Custom Callies ULTRA Billet LS Crankshaft Main Diameter:2.750 Ductile Iron sleeves and extraThis 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