MAGNUM LS1 4.000 STROKE, 2.559 MAINS, 2.100 PINS, 4340

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.