ZF 8 Speed Automatic Transmission Equipment And Tool Institute Tech Day ... Launch in Ram 1500 Trucks August 2013 Both RWD and AWD options (no FWD) "Modular Design" allows for future expansion (ie. hybrid) *8HP45 will eventually be replaced by 845RE from ITPMeet our 2014 RAM 1500 Tradesman Regular Cab 4x4 shown in handsome Black Clearcoat. Powered by a 5.7 Liter HEMI V8 that generates 395hp and is paired to a smooth-shifting 6 Speed Automatic transmission. Fuel Economy Breakdown. Truck buyers care about fuel economy, too, and Ram knows it. That's why you can get an 8-speed transmission, a 3.0-liter diesel engine, and a 3.6-liter V6 gas engine in ...If you have a 12.25" clutch, the starter will bolt right up to the block. All DEE's manufactured after 8/99 had 1 3/8"x10 spline, and the bigger clutch set. Older 6 speeds had 1 1/4" and smaller clutch and on top of the tranny will be "DEA" in black marker. Swap information to replace a 5-speed with the 6-speed is under construction.