American Powertrain's GearStar Automatic Transmissions for Ford vehicles, No. 4R70W, feature a Yank billet torque converter, transmission fluid, trans cooler, and a factory-style dipstick. The 4R70W comes in levels 2-4 and offers 400 hp (up to 400 ft.-lbs. of torque), 500 hp (up to 450 ft.-lbs. of torque), and 750 hp (up to 550 ft.-lbs. of torque), depending on the level. The Level 2 and 3 transmissions are available with a 2-bolt or 3-bolt bellhousing, while the level 4 includes a maste roverhaul kit with alto-hardened steels. Each also comes with a transmission mount and custom 360-degree adjustable shift linkage arm.
