Engine Swap Compatibility

By heygibb
April 14, 2009 in Ask A GM Technician

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heygibb

Posted April 14, 2009

I have a '91 silverado and an '89 sierra, both w/ 5.7L 350 engines. My gmc engine is on the way out and was considering putting the chevy engine in the gmc. Is this a compatible swap re the wiring? One other potential issue is that the sierra is 4wd, while the silverado is not.

Any advice would be helpful in my decision.

Thanks

Tim

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