A combined effort by Callies' CNC programming and engineering staffs
has resulted in a component that is distinctive and highly functional.
Unique counterweight and rod arm contours produce a lightweight, aero-efficient crankshaft.
Many BB Chevy crankshafts are counterweighted to offset simple balance forces detected at main bearings 1 and 5 by today's precision balancers. Callies Series II Magnum Mass Correct counterweights have been placed specifically to reduce bearing loads.
By concentrating mass at the point of imbalance, the transfer of rotating and reciprocating assembly weight loads to non-adjacent main journals is limited. Lighter overall weight is an added benefit of Mass Correct counter weighting, resulting in improved throttle response.