Scat 4340 Forged Pro Comp Lightweight Crankshafts


Scat
Scat 4340 Forged Pro Comp Lightweight Crankshafts

Product images may differ from actual product appearance.

Perfect for engines
needing quicker RPMs

These cranks are made of the same aircraft-quality forging as standard 4340 but with profiled counterweights to reduce weight.

Crankshaft highlights:

  • Straight shot and chamfered oil holes
  • Nitride-hardened for superior wear resistance
  • Lightening holes in all rod throws
  • .125'' radius on all journals
  • Stress-relieved and shot-peened
  • Aero-wing counterweights increase horsepower by reducing windage
  • CNC-machined for absolute tolerances and symmetry for ease of balance



  • Chevy - Small Block

    942-435010-2
    4340 Pro Comp Lightwt. Crank
  • Chevy 350
  • 3.480'' stroke
  • For use with 5.700'' rod
  • 2-piece rear seal
  • 48 lbs
    View this item
  • $1,038.99
    Ships
    02/23/12
      942-435050-2
    4340 Pro Comp Lightwt. Crank
  • Chevy 350
  • 3.750'' stroke
  • For use with 6.000'' rod
  • 2-piece rear seal
  • 49 lbs
    View this item
  • $1,038.99
    Ships
    02/23/12
      942-435056-2
    4340 Pro Comp Lightwt. Crank
  • Chevy 350
  • 3.800'' stroke
  • For use with 6.000'' rod
  • 2-piece rear seal
  • 49 lbs
    View this item
  • $1,038.99
    Ships
    02/23/12
      942-440056-2
    4340 Pro Comp Lightwt. Crank
  • Chevy 400
  • 3.750'' stroke
  • For use with 6.000'' rod
  • 2-piece rear seal
  • 50 lbs
    View this item
  • $1,038.99
    Ships
    02/23/12
    Chevy - Big Block

    942-445410-2
    4340 Pro Comp Lightwt. Crank
  • BB-Chevy
  • 4.000'' stroke
  • For use with 6.135'' rod
  • 2-piece rear seal
  • 65 lbs
    View this item
  • $1,161.99
    Ships
    02/23/12
      942-445425-2
    4340 Pro Comp Lightwt. Crank
  • BB-Chevy
  • 4.250'' stroke
  • For use with 6.385'' rod
  • 2-piece rear seal
  • 65 lbs
    View this item
  • $1,161.99
    Ships
    02/23/12
    Chrysler - Big Block
      942-444018-2
    4340 Lightweight Pro Comp Forged Crankshaft
  • 4.500'' Stroke
  • For use with 6.760'' Rod
  • 8-Bolt Flywheel flange
    View this item
  • $1,449.99
    Ships
    02/23/12