PROFORM 66277 GM LS-Series High-Torque Starter for 168-Tooth Flywheel

Upgrade your GM LS-series engine with the PROFORM 66277 high-torque starter, engineered to deliver reliable cranking performance for demanding street and performance applications. Its 3.75:1 gear-reduction design provides increased starting torque, helping turn over high-compression and performance-built engines with confidence. This starter is designed for use with a manual transmission and a 168-tooth flywheel.
The PROFORM 66277 features an adjustable mounting block to help simplify installation and provide flexibility when positioning the starter on compatible GM LS-series applications. Its black-painted finish adds a clean, durable appearance while helping protect the housing during normal use. The compact, performance-oriented design makes it a practical replacement or upgrade for enthusiasts seeking dependable starting power without unnecessary complexity.
Built for straightforward installation and consistent operation, this PROFORM starter is supplied as a complete unit for compatible applications. Verify flywheel tooth count, transmission configuration, engine compatibility, and mounting requirements before installation. With its high-torque output, adjustable block, and gear-reduction construction, the PROFORM Part Number 66277 is a dependable starting solution for GM LS-series engines using a 168-tooth flywheel and manual transmission.

Features:

• Brand: PROFORM

• Part Number: 66277

• Application: GM LS-series engines

• Design: High-torque starter with 3.75:1 gear reduction

• Compatibility: Manual transmission applications

• Flywheel Compatibility: 168-tooth flywheel

• Mounting: Adjustable mounting block

• Finish: Black-painted housing

• Quantity: Sold individually