The 1988-1995 trucks use the removable chip. Never actually seen one though. The Vortec equipped GMT400 trucks have a computer that had to be flashed by the dealer, or now anyone else that had the equipment to do so. The 5.0 never came with the 4L80E, where as the 4.3 did in some vans, and the 5.7 commonly came with it. I can't get GM to flash a payload to the ECM, because you need a VIN to do that, and the 5.0 and 4L80E never came together, so that's out. I could get a place like HPTuners, or someone with EFI Live and the correct licenses to do it, but it's still a 5.7 to 5.0 swap, and I don't want to dump a lot of money in that swap.
I recently bought the truck and dumped ALOT of money in parts into it, with the intention of knowing what I had. Turns out sh!t can still go wrong. I really don't want to put a crate 350 into it, because for about the same money, I can put a LBZ Dmax/Allison from a wrecked '06 in it. I could buy a used 350, but you just don't know what you have with that. (I know, same problem with the Dmax) I have a 305 that I know to be good, so I'd prefer to do that. That engine had always treated me very well. Has never caused a whisper of a problem.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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