The TREMEC TR-3450 is a 5-speed manual transmission for longitudinal engine rear wheel drive trucks. It includes one overdrive gear, a light-weight aluminum housing, multi-cone synchronizers on first and second gear, and a synchromesh reverse gear. It is manufactured by Transmission Technologies Corporation. Applications Chevrolet Silverado C1500 and C2500 Dodge Ram 1500 and 2000 External links Official page 3450