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Callies-Magnum-Big Block Chevy Crankshafts

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Availability: In stock

$2,173.00

Quick Overview

Callies



  • Average Weight for 4.500 in. Stroke Balanced to 2350g Bob. = 69 lbs

  • Gun Drilled Mains, With 8 Full Counterweights

  • All Rod Journals Lightened

  • Dual post Keyways

  • Heat Treatment = Perma Case Deep Nitride


Magnum

Callies-Magnum-Big Block Chevy Crankshafts

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$2,173.00

Details

Your request for a lightweight yet durable crankshaft for the powerful big block Chevy engine has been answered. Callies’ design team has optimized material distribution throughout this crankshaft to produce a component that is strong yet easy to balance.

Many BBC crankshafts are counterweighted to offset simple balance forces detected at main bearings 1 and 5 by today’s precision balancers. Callies Magnum Mass Correct counterweights have been strategically placed to reduce imbalance forces over the entire length of the shaft. The result is a crankshaft that exhibits superior bearing life and minimal wear.

Material distribution over the rod journal arms and critical strength generating regions of Magnum BBC crankshafts has been enhanced as well. These slight design changes improve the strength to weight ratio ensuring each Magnum crank will have an extended fatigue-resistant life.

Our Dual Arc leading edges create a unique counterweight that is beneficial in the reduction of disruptive crankcase windage. This profile characteristic is of greatest value in high RPM, large displacement engines.

A typical 4.500 stroke BBC shaft will have a finished weight of 69 lbs. All rod journals are drilled with generously radiused lightening holes. Each counterweight features Callies’ (Dual Arc) windage reducing leading edge.

Part #

Stroke

Pin Main
BBG42B-MG 3.5000 2.2000 GM Big Block – 2.750
BBZ43B-MG 3.5800 2.1000 GM Big Block – 2.750
BBZ43B-MG 3.6000 2.1000 GM Big Block – 2.750
BBH42B-MG 3.6250 2.2000 GM Big Block – 2.750
BBH43B-MG 3.6250 2.1000 GM Big Block – 2.750
BBZ44B-MG 3.6800 2.0000 GM Big Block – 2.750
BBJ43B-MG 3.7500 2.1000 GM Big Block – 2.750
BBM42B-MG 3.8750 2.2000 GM Big Block – 2.750
BBM43B-MG 3.8750 2.1000 GM Big Block – 2.750
BBU42B-MG 4.1250 2.2000 GM Big Block – 2.750
BBU43B-MG 4.1250 2.1000 GM Big Block – 2.750
BBP42B-MG 4.2500 2.2000 GM Big Block – 2.750
BBP43B-MG 4.2500 2.1000 GM Big Block – 2.750
BBQ43B-MG 4.5000 2.1000 GM Big Block – 2.750
BBS42B-MG 4.7500 2.2000 GM Big Block – 2.750
BB+42B-MG 5.5000 2.2000 GM Big Block – 2.750