MAGNUM LSA 3.625″ STROKE, 8-BOLT REAR FLANGE, 58-TOOTH

Description

After years of service,
Magnum crankshafts by Callies
have established themselves
as one of the most durable
competition crankshafts ever
produced. Magnum crankshafts
are manufactured from ultra
pure SAE 4340 steel. Callies
then subjects this material
to multiple heat treatments,
resulting in a crankshaft
with unsurpassed wear and
strength characteristics. All
Magnum cranks feature Callies
Ultra-Case heat treatment.
Each Magnum crank will have
gun drilled mains and fully
profiled counterweights,
regardless of engine type. A
typical 4.000” stroke
Small Block Chevy will weigh
less than 48 pounds. Magnum
crankshafts are available for
a variety of engine types and
can be manufactured to your
specific configuration. Many
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 exhibiting
superior bearing life and
minimal wear. Material
distribution over the rod
journal arms and critical
strength generating regions
of Magnum crankshafts has
been enhanced as well. These
slight design changes improve
the strength to weight ratio,
ensuring each Magnum
crankshaft will have an
extended fatigue resistant
life.