9000 Pro Comp Lightweight Crankshaft Big Block Chevy (2-Piece Rear Seal)
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SCATPART NUMBER: 942-945420

9000 Pro Comp Lightweight Crankshaft Big Block Chevy (2-Piece Rear Seal)

$46834$492.99You Save$24.65
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Big Block Chevy
    9000 Pro Comp Lightweight Crankshaft
  • Big Block Chevy (2-Piece Rear Seal)
  • 4.250" Stroke for use with 6.135" Rod
  • External Balance

Less Rotating Weight for More Horsepower!
These crankshafts use the same space-age material as Scat's 9000 Series Stock Replacements yet are modified to be lighter. Pro Comp Lightweight Crankshafts utilize lightening holes and aero-wing counterweights to reduce weight and windage. They're an ideal, affordable option for increasing the cubic inches and horsepower of mild to moderate street or race engines.

Show MoreFeatures
  • 9000 cast steel construction
  • Straight shot oil holes
  • Stress-relieved and shot-peened
  • Precision ground, micropolished journals
  • Lightening holes in all rod throws to reduce mass
  • Aero-wing counterweights increase horsepower by decreasing windage



    Scat has been manufacturing and distributing crankshafts, connecting rods, and engine components for more than fifty years. The tradition continues to this day with a 42,000 sq/ft facility in Redondo Beach, California. Quality is the first step in all Scat products... skilled craftsmen, superior materials, innovation, and dedication create the absolute best parts for you.
Part TypeCrankshaft
Product LineScat 9000 Series Cast Pro Comp Lightweight Crankshafts
BrandSCAT
Package Height9.5
Package Width10.2
Package Length28.2
Weight65.6 PG
Part CategoryPerformance Parts
Crankshaft MaterialCast steel
Rod Journal Diameter2.2 in (55.9 mm)
LightenedYes
QuantitySold individually
Crankshaft Snout StyleStandard
Main Bearings IncludedNo
Engine BalanceExternal
Rod Bearings IncludedNo
Rear Main Seal Style2-piece
Requires Narrow BearingsNo
Part FitmentSemi Universal
Engine Stroke4.25 in (107.95 mm)
Vendor Part Number9-454-4250-6135
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
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