I am betting the early 5.0 and 5.7 Vortecs used a different chip in the ecm. I believe that a lot of the vehicles of that era used the same ecm, but a different chip. Could you swap a 5.7 in place of a 5.0 of similar vintage? Probably could get by.......would it run right?....probably not really, but you are correct that sensors and ecm would compensate to some extent. Hopefully someone more knowledgeable will weigh in. I know I had a 92 with a 5.7 with a 5 speed (don't hold the buying a 5 speed against me, as that is my last), and the chip for a 5 speed, and automatic was different, and I am betting not even close to being compatible, such as swapping an auto for a 5 speed.
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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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