Callies' line of Compstar crankshafts begin their life overseas utilizing proprietary forging equipment and designs, not generic forgings that other manufacturers useFrom unique enhancements like the triangle shaped notching found one their counterweights, to exclusive 8-counterweight designs, the 4340 steel forgings are rough-machined at the foundry, and final processed and machined at Callies' USA facility.

All Compstar components are 100% Mag Particle inspected to verify there are no cracks or inclusions in the material. Theyr are also inspected by Callies' in-house metallurgical laboratory to verify material and heat treatment meet Callies' engineering and quality requirements. Beginning with properly placed counterweights that not only improve balance but reduce bearing loads, every aspect of these highly stressed components has been analyzed.


Every Livernois Motorsports engine component is engineered and assembled to work seamlessly as a package solution. All Livernois piston, rod, crankshaft, bearing, and fastener choices are designed to provide exceptional durability and unmatched precision. Livernois produces meticulously crafted, precision engines with custom-designed components built from decades of racing and engineering knowledge.

About Livernois Motorsports

Livernois Motorsports & Engineering has become best-known for revolutionary tuning and high-end performance products for late model Ford, Mopar and GM vehicles. The company is proud of its deep roots in the automotive and motorsports industry dating back to its original founding in 1949. Since then the company has expanded its product line to include tuning and performance components for desert racing, SCCA and drag racing. Livernois Motorsports is proud to engineer, test and manufacture its products in the USA.

Get Help
Alert status message here
Step 1: Call us at 313-561-5500
Step 2: Tell us your Support ID:
Step 3: Click connect when we tell you to