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Buick Forum: will a chevy 350 swap into a 93 road master work?
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  1. #1
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    Mar 2018
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    will a chevy 350 swap into a 93 road master work?

    i been offered a great deal on a 93 buick road master mainly because it needs a new engine. everything else is in great condition. i have a nice chevy with goodies attached to a th400. will this engine fit ? i plan on keeping it carburated is there anything else i have to change besides engine mounts, exhaust, and line?

  2. #2
    Join Date
    Feb 2017
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    Re: will a chevy 350 swap into a 93 road master work?

    I think as long as you use the TH400 in place of the original Buick transmission, you should be okay. Not sure about the driveshaft lengths though.

  3. #3
    HotZ28's Avatar
    HotZ28 is offline Full Member My Buick(s): 1996 Roadmaster Limited Collectors Edition 58k - 1996 PAU
    Join Date
    Jul 2005
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    Re: will a chevy 350 swap into a 93 road master work?

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    There were two length tail-shafts that came with the TH400. One was the longer one used in trucks & vans, the other version was used in some cars. So yes, the driveshaft length may have to be modified. The small block shroud fit fine, but you will have to modify fuel delivery with an adjustable fuel regulator. The wiring harness & ECM will no longer operate with a carb fuel supply engine. You will have to deceiver all that all out.
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