quote:
Originally posted by mikep:
Motorbike....I'll cast my vote for the Caddy 4-6-8 as the biggest POS engine ever made.
Mikep
The 4-6-8 Cadillac engine itself wasn't all that bad, it was just the variable displacement controls. The engine was simply a 368ci Caddy V8, which shared it's block design with the 425, 472 and 500 Caddy engines. The 368 was a debored 425, which was the engine offered in the 1977-79 models. The way the engine worked was the pivot points on the rockers could change, allowing the rocker to open and close the valves, or slide up and down on the rocker stud. The system that controlled the valves was the problem with the engine. If the owner of the car was smart enough to disable the system, the 368 was just as reliable as any other Caddy V8.
I worked on a '81 Caddy series 75 (factory limo) four or five years ago now. The car had the infamous 4-6-8 engine, but the owner had disabled the system. The engine in that car was just as reliable as any other V8 of that era.
The 4.1L V8 that replaced the old big Caddy V8 engines, now that was a POS!