Chevy Plate6 Inch Diameter Crank Hole Chevy dowel pin locations Universal Without Bolt Pattern6 Inch Diameter Crank Hole2 Inch Diameter Vent HolesIncludes dowel pin locations for Chevy Profiled Mid Motor Plates If you are building a new car, this is a great way to go. Understand that if you are replacing an existing motor plate, the notched locations may not match what you have - unless your original is a Pro-werks profiled Motor Plate. These Pro-werks profiled mid-plates are shaped and ready to install, complete with the drilled bolt holes for chassis mounts. Available in different thicknesses, for either 1-1/4" or 1-1/2" diameter tubular frame rails, measuring 19-1/2" centers on the frame rail notches. Includes Chevy dowel pin locations, 6" diameter center hole, and two 2" diameter vent holes. Compatible with Pro-werks profiled front motor plates. Accurately CNC Machined is Better Your browser does not support our video. All of the Pro-werks Motor Plates are precision CNC machined from premium 6061-T6 aluminum to exact tolerances for optimum fit and finish. The accuracy obtained from CNC machining is superior to die stamping, laser or water jet cutting methods that have grown to be popular by other manufacturers. Proper engine alignment can only be achieved with accurate locating of the engine to the drive train. This is an area that should not be compromised. The nations top pros count on us - so should you. Frequently Asked Questions: Q: Will the starter hole location accommodate the use of a different transmission? A:The starter hole location is positioned for the engine application that the motor plate is intended to fit. Any adaptation of non-OEM parts including the transmission, flywheel, flex plate or a unique starter may not allow for direct bolt-up. Yes, we make custom motor plates Do you need unique features; a different thickness or special lightening? (This drawing example is Chevy combined with BB Mopar)Special features and multiple-application hole patterns can be accommodated. Different plate thickness may also be available upon request.