Track Smart Features

• Certified 4340 Aircraft Quality American Steel

• Non-Twist Forging

• CNC Machined

• Fully Nitrided

• 1 & 4 Rod Throws Have Lightening Holes

• Micro-Polished Journals

• 100% American Made

Track Smart 4340 American Crankshaft

Pro Series 4340 Crankshaft

“The Best For Less!”

The Best for Less!

Pro Series Features

• 4340 Aircraft Quality Steel

• Induction Hardened/Perma-Toughed to .080"

• Non-Twist Forging

• GM Type Oil Hole Clocking

• Fully Stress Relieved

• All Four Journals Have 1" Lightening Holes

• 1/8" Radius On All Journals

Large .125” radii on all journals.  (chamfered bearings required)

We use the finest high purity 4340 aircraft quality alloy and forge it by the experts in American crankshaft forgings, Louisville Forge in Kentucky. Then they’re shipped to the leader in high performance crankshaft machining, Callies Performance Products, where they are machined to the highest specifications, with roundness within 60 millionths and taper being held to within .0003” on all rod and main diameters. 

Buy American! All journals have .125” Tru-Form fillet radii. 1” Angalite lightening holes in all rod throws. Callies Perma-Toughs these cranks to a depth of .080”.  This produces a wear layer that remains intact even if reground .060” under (other cranks have a hardness depth as little as .003”). Journals are micro-finished to 5 microns or better.

CNC Machined

353457TS2...350 Main, 3.480" Stroke, 5.700" Rod

Chev. SB

353257...350 Main, 3.250" Stroke, 5.700 Rod

353457...350 Main, 3.480" Stroke, 5.700" Rod