The Chevrolet SSR (Super Sport Roadster) is a retractable hardtop convertible pickup truck manufactured by Chevrolet between 2003 and 2006.The 2003 and 2004 models used General Motors' Vortec 5300 engine, a 5.3 L 300 hp V8. Performance was 7.7 s to 60 mph (97 km/h) with a 15.9 s/86.4 mph quarter mile run. The 2005 SSR used the 390 hp (291 kW) LS2 V8 also found in the C6 Corvette and Pontiac GTO, and also offered a manual transmission (the six-speed Tremec) for the first time, as an option.