MAGNUM CRANK SBF 4.250 STROKE,

Description

• Average Weight for
  3.800 in. Stroke Balanced to
  1750g Bob. = 48 lbs
• Gun Drilled Mains
• All Rod Journals Lightened
• Heat Treatment =
  Perma Case Deep Nitride
• 351 Cleveland Main
  Diameter
• Proven High
  Strength & Reliability.

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
AISI 4340 steel. Callies then
subjects this material to
multiple heat treatments,
resulting in a crankshaft
that has 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.