B&M Holeshot 2400 for 1970-82 Ford C4 Automatic Transmissions Holeshot Torque Converter 2400 Stall with 26 spline input and 10.5-inch bolt circle. The Holeshot 2400 converter is good for vehicles with some performance engine modifications, particularly big cams that tend to reduce low-end power and torque. The higher stall speed of this converter will launch the car in a higher rpm range where more torque is readily available, resulting in quicker acceleration. Holeshot converters feature furnace brazed impeller fins and turbine, new precision alloy impeller hub and new heavy duty needle bearings. Other features include fully balanced and pressure tested by expert technicians. If your vehicle is equipped with a plate type nitrous system or supercharger, please refer to the Nitrous Holeshot line of converters. Notes: Stall speed listings are based on engines producing 230lb. ft. of torque at 2,500 rpm. More torque at 2,500 rpm will give you more stall speed, less torque at 2,500 rpm will give you less stall speed than the stall speed ratings indicated. Higher stall converters can generate more heat, so we highly recommend adding a transmission cooler. This converter is Not recommended for supercharged, plate-type nitrous oxide or trans-brake applications. The product images shown are for illustration purposes only and may not be an exact representation of the product. Fits 1970-82 Ford, Lincoln and Mercury C4 automatic transmissions. Uses a 10.5 inch bolt pattern, accepts a 26 spline input shaft and 1.375 inch crank pilot.