Chev 350 454 Small Block / Big Block MSD DynaForce Starter Motor 168t # MSD50951 Starter, DynaForce, Mini, Red Powdercoated, Chevy, Small Block/Big Block, Staggered Bolt Pattern, Each Flywheel/Flexplate Tooth Quantity: 168-Tooth Starter Mounting Configuration: Staggered Starter Style: Mini Hitachi Adjustable Mounting Block: Yes Starter Rotation: Standard Starter Finish: Red powdercoated Maximum Recommended Compression Ratio: 18.0:1 Gear Reduction Ratio: 4.40:1 Mounting Block Material: Billet aluminum Remanufactured: No Quantity: Sold individually. MSD DynaForce Starters MSD DynaForce starters are built with all-new components and hand-assembled in the USA. For maximum performance and reliability, all starters are dyno-tested and blueprinted before they leave the factory. The armature is balanced during assembly and is guided by two ball bearings for smooth engagement during thousands of starts. MSD DynaForce starters feature a 3.4 hp motorand a reduced 4.4:1 gear ratio delivers superior torque to start high-compression race engines up to an 18:1 ratio. They include a downsized housing that clears most headers and oil pans, and a billet aluminum mounting block that can be clocked in different positions for tighter clearance applications. These starters are available in a durable red or black powdercoat finish that's designed for maximum protection while looking good. They use a nickel plated, heavy-duty solenoid for optimum performance in severe environments. Order the model designed for fitment with your vehicle application.