will a 4.3 vortec swap into my 2001 gmc that has a 5.3 vortec

Asked by Dec 04, 2015 at 06:02 PM about the GMC Sierra 1500

Question type: Maintenance & Repair

1 Answer

69,715

The 4.3 is a V-6 and the 5.3 is a V-8, am I right? If so the only way it would work is if you got the computer and wiring harness that ran the 4.3 and swapped into your truck.

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