Northstar revised for 2000

Improvements to the powerplant include a roller-follower valvetrain, improved combustion chamber, center-feed intake manifold, coil-on-plug cassette ignition system, and a Siemens powertrain controller.

The 2000 DeVille features significant advancements to Cadillac's Northstar powertrain. The 4.6-L DOHC V8 has been redesigned with an emphasis on producing better fuel economy with regular fuel and providing smoother and quieter operation. To accommodate the change from premium, 93 octane to regular gasoline, the engine's compression ratio was lowered from 10.3:1 to 10.0:1.

As before, there are two states of tune for DeVille's Northstar. The engine in the DeVille and DeVille High Luxury Sedan (DHS) generates 205 kW (275 hp) at 5600 rpm and 407 N·m (300 lb·ft) of torque at 4000 rpm. The sportier DeVille Touring Sedan (DTS) is equipped with a tuned version of the Northstar V8 producing 224 kW (300 hp) at 6000 rpm and 400 N·m (295 lb·ft) of torque at 4400 rpm. The DTS engine's redline is slightly higher (6700 rpm) than that of the DeVille and DHS (6400 rpm).