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- - 4.3 to 5.7 swap (https://67-72chevytrucks.com/vboard/showthread.php?t=853050)

papsoldblue72

06-14-2024 05:44 AM

4.3 to 5.7 swap

I have a 91 c1500 4.3 5 speed manual and I want to swap the old tired 4.3 out with a good old 350 2-piece rear main seal. my question is can I use the 4.3 flywheel on it? thanks for any info.

kwmech

06-14-2024 01:27 PM

Re: 4.3 to 5.7 swap

Nope, the 4.3 had different balancing requirements

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