High Torque Mini PMGR Starter Chevy Big & Small Block 305 350 454 168 Tooth Flywheel Permanent Magnet Gear Reduction: cranks faster and with less battery drain! Incredibly light weight -- less than 8 pounds! PMGR racing design will start up to 18:1 high compression engines. Replaces the stock starter in 283, 327, 350, 396, 427, & 454 engines. Designed with staggered bolt pattern for easy mounting on Chevy engines with 168 tooth flywheel.