1991: 4.6L 2-valve SOHC V8 introduced in the 1991 Lincoln Town Car 1993: The 4-valve Dual Overhead Cam (DOHC) version of the Modular engine made its debut in the 1993 Lincoln Mark VIII 2005: 3 ...

GM had been working on an engine program to replace the Northstar with a new high-tech DOHC V8 for ... people choose the 3.6L DI V6 when ordering a Cadillac STS than the 4.6L Northstar V8 since ...