[Phantom]

Dave I assume that your engine does not have a Anti-Shudder Valve like the VW TDI's do. For those that do not know what the ASV is or does it is an normally open throttle body for Diesels that closes only when the engine is being shut off (key off). The closing starves it for air and forces the shutdown after fuel is shut off, this makes for a smoother shut down.

What I need to look into is activating the ASV manually so I can kill the engine without using the key or cutting the power to the cam driven fuel pump.

Dave you could create your own mechanical ASV by modifying a junk yard Throttle Body. Make the TB open at all times unless you manually close it by pulling a knob. A different option would be to control a Drive By Wire TB and close it electronically.

If you want to try a DBW solution I have a (actually 2) DBW TB from a Series III GM3800 L26 the Inside Diameter is 2.5" I believe I can check if you want. You can have it for shipping only or if you are close the Northern Kentucky or Louisville we could meet up.