Since 1952
America's Oldest Speed Shop ®
Speedway Motors Bill Smith

Scat 910375 383 Chevy Cast Steel Crankshaft, Ext. Balance

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Specs
Weight:
51
Sold in Quantity:
Each
Rod Length:
5.7
Stroke:
3.750
Main Journal Style:
350 mains
Rod Journal Diameter:
2.10"
Rear Main Seal Style:
2-piece
Garage Sale:
No
Main Journal Diameter:
2.448"
Crankshaft Material:
Cast Steel

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What's in the Box

Scat's hi-tech, fatigue resistant 9000 material cast steel cranks have near forged steel endurance at a value price! A perfect way to increase cubic inches on mild to moderate street or race engines.

  • For 2-piece rear main blocks
  • Aero-wing counterweights increase horsepower by reducing windage
  • Straight shot oil holes
  • Lightening holes in all rod throws
  • Precision ground and micro polished
  • Externally balanced

Specs

  • Stroke:  3.75"
  • Rod Length:  5.7"
  • Rod Pin:  2.100
  • Weight:  51 lbs.
  • Main:  350

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Scat's hi-tech, fatigue resistant 9000 material cast steel cranks have near forged steel endurance at a value price! A perfect way to increase cubic inches on mild to moderate street or race engines.

  • For 2-piece rear main blocks
  • Aero-wing counterweights increase horsepower by reducing windage
  • Straight shot oil holes
  • Lightening holes in all rod throws
  • Precision ground and micro polished
  • Internally balanced
Speedway 383 Chevy Crankshaft, Two-Piece Main
                        

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For blocks with 2-piece rear main seals.

Scat 4-350-3750-5700 383 Chevy 4340 Forged Crankshaft, 3.75 Stroke
                        

As you make more and more power it becomes more important to use quality parts. These Scat 4340 forged steel cranks will help keep your motor alive.

  • For 2-piece rear main blocks
  • 2.100" rod pin
  • 52 lbs.
  • Straight shot & chamfered oil holes
  • Nitride hardened for superior wear reisistance
  • Lightening holes in all rod throws
  • Large radius on all journals
  • Heat treated, shot peened
  • Designed at SCAT
  • Engineered at SCAT
  • Inspected & micropolished at SCAT

Note: If you are going to run 915-15550 in a sprint car motor, you must have the crank flange turned down prior to balancing the crank to allow it to go through the motor plate. 

Small Block Chevy 400 Harmonic Balancer, 8 Inch, Plain Steel
                        

Small block Chevy 400 c.i. V-8 stock-type replacement 8" harmonic balancers. External Balanced. Dampers are designed for press fit.

  • Ring and hub are bonded (vulcanized) to the elastomer
  • Surpasses the reliability and strength of OEM
  • NOT SFI-Approved
1969-Up Small Block Chevy Narrowed Rod Bearings
                        We start with a Clevite 77 # CB663P-STD standard size rod bearing and clearance chamfer cut it to fit large fillet radius cranks. Fits small block Chevy large journal (2.100" rod journal) crankshafts.
                    
Clevite P-Series 1969-Up Small Block Chevy Main Bearings
                        

Not to be confused with standard "passenger" car bearings, Clevite's P-Series is their oldest line of premium high performance bearings. These sets are specifically for 302-305-327-350 S/B Chevy "Large Journal" engines built from 1969-Up (with 2.100" rod journal).

  • Use P-Series rod bearings where extremely high RPM’s cause severe rod bore close-in.
  • Use P-Series main bearings where higher eccentricity is desired to narrow bearing contact patterns and to provide increased oiling to rod bearings.

Note: Will not work with 400 c.i. V-8.

P-Series Features (Link)

Clevite Application Chart