The all-new 3.6-liter engine debuts in the 2004 CTS due in dealerships by August. By BOB GRITZINGER (16:10:44 April 04, 2003) Cadillac knew from the moment its 2003 CTS hit the pavement that the car’s biggest shortcoming was the modest punch from its 220-hp 3.2-liter V6 engine. So here’s good news: Help is on the way, in the form of what General Motors calls a “high feature” V6 engine for 2004 models. The 3.6-liter DOHC 24-valve powerplant offers such variable intake and exhaust valve timing, piston-cooling oil jets and a dual-stage variable intake manifold. The all-new aluminum block engine produces 255 hp at 6200 rpm and 252 lb-ft of torque at 3200 rpm, all with the same estimated average fuel economy of 18 mpg city and 26 mpg highway. (For those seeking serious performance, Cadillac is set to debut its 400-hp 5.7-liter V8-powered CTS-V in early 2004.) The 3.6-liter engine debuts in the 2004 CTS due in dealerships by August, followed by its introduction in the Cadillac SRX sport wagon in late 2004. Buick Rendezvous gets the engine beginning next January and a variant of the V6 appears in the 2005 STS. In CTS, the only transmission choice for the first year of production is a five-speed automatic; a six-speed manual comes in 2005 models. For the 8 percent to 10 percent of CTS buyers that need a manual shifter, Cadillac will continue to offer a five-speed stick as the only transmission choice with the carryover 3.2-liter engine through the 2004 model year. Want even better news? Engineers say they can build a number of variants of the new engine, including 2.8-, 3.2- and 3.8-liter versions, naturally aspirated or turbocharged, with outputs ranging from 200 to upward of 370 hp and from 200 to more than 350 lb-ft of torque. The engines will be installed in FWD, RWD and AWD configurations, as well as parallel gas-electric hybrid layouts.