Can you use a transfer case from my 78’ with a 4L80?

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nvrenuf

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Since we don’t know what kind of ‘78 or what kind of tcase, the best answer is IF it has a 32 spline input you MAY be able to adapt it. Nothing from a ‘78 anything will be a direct bolt up.
 

bucket

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If you currently have an NP205 behind a manual trans, Advance Adapters sells a kit to put it on a 4L80E. It requires some disassembly and machining the transfer case though.

Beyond that, we need to know exactly what you are working with to give a decent answer.
 

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