I have sort of a rookie question here, for starters the vehicle is a 2000 Chevy Blazer, 4.3, 4l60, 4wd and the guy is swapping to a 96ish 5.7 Vortec motor. I will be doing the tuning and unlocking for him. At this point, I think we are going to get a new pcm for it, that's already for the v8 to save licensing his pcm, and then also licensing a stock v8 tune to save him some money on the credits. So far my experience has been in the later LS motors, and so doing the older SBC style motors on HP Tuners is new to me.
He wants to retain his vehicle's VIN in the pcm, and I know that a VIN swap is generally simple, so long as the OS's match. My question is if there is any specific hardware # of a pcm that we will need in order to have the same operating system as his original so that I can change the VIN over. Were there many different OS's in that style, would the v6 and v8 likely be different OS's and not let a VIN swap happen?
I appreciate any help or input, as I would hate to have him buy and license a new pcm, just to find out that the vin swap wont work anyways.
Thanks in advance,
Steve