...and other V-864 haters...
The V-864 is NOT crap!
Like any engine, you have to maintain it properly. I sold my 81 Fleetwood equipped with the V-864 in 1998 with 330,000 original miles. The ONLY thing that I ever changed on the motor was the water pump and the valve cover gaskets.
The 81's had the first on board diagnostic computer for GM as well as a BACKUP analog computer that even today's cards don't have. It was ahead of its time and scared people...simple as that.
QUICK HINT: If you want to disable the V-864 system, pull the 2 wire electrical plug from the transmission on the drivers side. I wired in a switch to this circuit to control it from the dash.
Now for some real news if you hated V-864's! The new pickups from GMC and Chevy WILL have the same system installed on them. They are now calling it DOD "Displacement on Demand".