Swapping 4.3 for 5.7

By John Deere Bob
May 2, 2006 in Ask A GM Technician

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John Deere Bob

Posted May 2, 2006

well i swapping my 4.3 vortec for an older 5.7 that has 70,000 mileso n it since i blew the rod bearings in my vortec so it runs, but it still has the old computer in it. now it obviously isnt gonna work i dont think so can it be reprogrammed at a dealership and how much will it cost?

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