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Thread: swapping original 3 speed manual transmission in 57 Chevy to a Muncie 4 speed transmission

  1. #1
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    swapping original 3 speed manual transmission in 57 Chevy to a Muncie 4 speed transmission

    Can I swap out the original 3 speed manual transmission in my 57 Chevy to a Muncie 4 speed manual transmission without having to have the driveshaft lengthened or shortened? Also, is the splined shaft the same on both transmissions? In other words, would the transmission swap be a simple "bolt-on" swap? (I'm old and don't need extra work).

  2. #2
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    I believe you are good to go unless it s a later Muncie with 26 spline input. The driveshaft my 56 came with when Muncie equipped got shortened and installed in my 67 Camaro after I left the original shaft on the starting line at the old Lawrence Dragstrip about 1979. I believe is was uncut prior to that only the yoke was changed to 27 spline. I believe your current shaft is 17 spline.

  3. #3
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    Thanks for the response. I guess I'll start by removing my driveshaft to confirm how many splines are on the original yoke.

  4. #4
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    The early T10s from late 50s to early 60s were the only 4 speeds with a 17 spline output all Munchies were 27 and 32 spline.

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