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 - When Push Comes to Shove - by Dave Patterson. When I was a “kid” (still am to a deree) about two I guess, my parents couldn’t find me one day. They were horrified (we lived by the railroad), my mother thought the worst: "He’s been run over by a train, he’s gone forever!" Where did they find me? Perched up on the seat of the tractor. I’d probably plowed about 3000 acres (in my head anyway) by the time they found me. This is where my love for tractors started and has only gotten worse in my tender 50 yrs on this “green planet”. I’m par
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