Each starter is tested for amp draw as well as rotational speed. This kit includes starter gear radial alignment shims and detailed installation and wiring instructions. This is to be used with a 139 or 136 tooth ten degree pitch flex plate that is common with the late model torque convertor Hemi engines .
This is designed for Hemi engine blocks that have no mounting provision for a starter and will mount off the motor plate. Starter gear pitch is ten degrees and is about thirty percent stronger than the twelve degree pitch starter due to better tooth engagement with the smaller diameter flex plates.