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Callies SAJ113CC Compstar Comet 4340 Crankshaft Small Block Chevy 383

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Specs
Weight:
42
Sold in Quantity:
Each
Rod Length:
5.7
Stroke:
3.75
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:
Forged 4340 Steel
Callies SAJ113CC Compstar Comet 4340 Crankshaft Small Block Chevy 383
Callies SAJ113CC Compstar Comet 4340 Crankshaft Small Block Chevy 383

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Callies SAJ113CC Compstar Comet 4340 Crankshaft Small Block Chevy 383

Details

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Q & A

What's in the Box

The Compstar Comet crankshafts from Callies are forged of 4340 steel and have had non-critical material removed to allow these cranks to weigh only 42 lbs. A light rotating assembly allows you to acclelrate faster off the corners. 

Two piece rear main seal, 350 mains.  3.75" stroke.

Item Details

This crank is cut for 6 inch or longer rods and it is rough balanced to a 1750 bob weight.

You may also be interested in:

MAHLE Small Block Chevy 383 Flattop Powerpak Pistons, 6 Inch Rods
                        

The Mahle PowerPak pistons are a race proven lightweight forged design that are complete with rings, wrist pins and locks. They are also completely phosphate coated plus feature an anti-friction Grafal skirt coating. PowerPak pistons are made from 4032 aluminum alloy to allow for tighter cylinder to wall clearances, and improved temperature stability.

  • Forged piston for performance applications
  • Lightweight slipper kirt forgings
  • Fully-machined crown
  • Grafal anti-Friction coating on skirts
  • Phosphate-coated to reduce micro-welding and pin galling
  • Pin bores finished on CNC boring equipment
  • Deburred
  • High strength, light weight steel pins
  • Race proven round wire locks
  • Low drag ring pak
  • 1.5mm, 1.5mm, 3.0mm file fit performance ring set is included
For 383 c.i. S/B Chevy (4.000" bore x 3.75" stroke). Choose oversize diameter needed.

PowerPak Piston Chart (GIF)

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. 

Clevite H-Series 1969-Up Small Block Chevy Rod Bearings
                        Clevite's H-Series was developed primarily for use in NASCAR type racing, but  they are suitable for all types of competition engines. These sets are  specifically for 1969-Up 302-305-327-350 S/B Chevy "Large Journal" engine (with 2.100" rod  journals).
  • Use H-series bearings with crankshafts that have oversize fillets and where engines run in the medium to high RPM range.
  • H-Series bearings should be used if contact patterns obtained with P-series parts are too narrow. Contact pattern should ideally cover 2/3 to 3/4 of the bearing surface.
  • If you aren't sure which type of performance bearing to start with, the H-Series will be your best choice.

H-Series Features (Link)
Callies CSA5700DS2A2AH Compstar S/B Chevy 4340 H-Beam Rods, 5.7 Inch
                        

Compstar connecting rods come standard with ARP 2000 7/16" cap screws. Will clear a .660" lift small base cam with a 4" stroke crank. 

Green Plastigauge for Bearing Clearance, .001-.003 Inch
                        Place a piece of this thread on a rod or main journal, torque cap in place, remove cap and by using the included chart, you know what your bearing clearance is. You should have one of each when assembling your engine. 
                    
Scat 435062LW F43 S/B Chevy Crankshaft-3.75 Stroke-350 Main-2.10 Rod
                        

Lightweight, strong and at a price you can afford. These 4340 forged steel cranks will really make a difference in your performance.

  • Fits small block Chevy with 2-piece rear main seal
  • Straight shot & chamfered oil holes
  • Nitride hardened for superior wear resistance
  • Profiled and pendulum cut counterweights
  • Gun-drilled main line hole for lightening and equalization of crankcase pressure
  • Star tail for reduced weight
Clevite 1969-Up Chevy 302-350 H Series Main Bearings-Standard Size
                        

Clevite's H-Series was developed primarily for use in NASCAR type racing, but they are suitable for all types of competition engines. These sets are specifically for 1969-Up 302-305-327-350 S/B Chevy.

  • Use H-series bearings with crankshafts that have oversize fillets and where engines run in the medium to high RPM range.
  • H-Series bearings should be used if contact patterns obtained with P-series parts are too narrow. Contact pattern should ideally cover 2/3 to 3/4 of the bearing surface.
  • If you aren't sure which type of performance bearing to start with, the H-Series will be your best choice.

H-Series Features (Link)

Elgin EPL-4 Assembly Lube, 4 Oz.
                        

Eliminates galling, metal transfer and oil starvation during initial break-in. Adheres to metal surfaces, will not drain off. Apply to bearings, gears, crankshafts, cam lobes, valve stems, lifters and all mating parts with close tolerances.

For gas, alcohol and nitro engines.

Learn why using assembly lube is so important in our tech article, Installing New Hardware.