Shifting ignition interrupt question

[Arminius]

Does the shift ignition interrupt switch on my 2003 5L MPI Alpha 1 only kill 4 cylinders? I believe the ignition interrupt occurs as the operator is pushing the linkage out of gear as the engaged gears tend to hang on while under load. I might try adjusting the interrupt to occur earlier in the sequence if there is no chance of killing the engine outright. In the past, I've never tried to understand it, just followed the book to the letter. Could try a turn in the correct direction in the interest of smoothing the shift a bit more.

 

[Thornton69]

Is it possible the throttle is too tight and not allowing the rpm to drop enough while shifting out of gear? Binding linkage including the lower shift cable can also cause shifting problems.

 

[Arminius]

I am only curious as to the effect of the interrupt on an MPI engine. Guess I can put muffs on it and see if it rattles along on 4 after I manually trigger the interrupt. This is something I read at some point with credibility typical of the Internet.