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Thanks everyone for the replies. I am confident it is only the starter, the heat from the headers makes sense, thanks highboy. It can't be the NSS, if wouldn't make any noise or movement if it was. I did roll if off the trailer in D (auto) which would do the same as using a breaker bar. There is no way it's hydrolocked, it purrs like a kitten - really like a pissed off lion - is stored inside and driven about once a week at a minimum. It ran like a champ and shut off without any sputter. Minutes later it didn't start. I rewired all of the ignition stuff, including the NSS when I put all of the MSD stuff on, all my connections are good, soldered and shrink wrapped. We'll see...
I did buy a new starter, but I have a wrecked shoulder that needs to get fixed first, so unless anyone is offering a hand, it'll be a bit before we discover the culprit.
Thanks again fellas!
Actually rolling the truck off of the trailer in drive in an automatic would not have the same effect as a standard trans . It is true in some of the older automatic transmissions you could pull or push start them but you had to get them up to 25 MPH or more before they would roll the engine over.