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Thread: NP420 transmission into 1963 M37; shifter rod hits the bottom of the dash in 1st gear

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    Default NP420 transmission into 1963 M37; shifter rod hits the bottom of the dash in 1st gear

    Someone I am sure has come across this malady. I have a 1963 M37 with a fresh stock 230 cubic inch flat head strait 6 that I have just installed into the engine bay. The correct transmission for this vehicle has been acquired. As I try to install the transmission, the stick shift will contact the bottom of the factory M37 dash board when shifting it into 1st gear. I have removed the transmission for shifter modification. The engine, bell housing, and frame of the vehicle are all factory, no mods. Researching the NP 420 transmission, I see that there were several variation of the "tower" (stick shifter).
    Has someone rebuilding an M37 experienced this and what was their correction?
    Should I bend the shifter, or cut and weld it shorter?
    When I purchased the vehicle, it had an older style four speed with the shifter tower closer to the center of the transmission and a hole cut BEHIND the original opening in the floor board. See pic. I have a fresh floor board, and the correct for year(?) transmission for this '63 vehicle. M37 floor boards.jpg

    M37 transmissions (1).jpg
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    Last edited by OutpostM37; 07-18-2019 at 18:26.

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    Potato Peeler Sgt Jiggins's Avatar
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    You might drop a message to Ferroequinologist. He has (had?) the NP420 I took out of my '51 M37 20 years ago. If nothing else, he can send you a pic. I'll post a pic of the shifter from it shortly in case it helps you.

    When I went to it's cousin, the NP435 (synchronized, otherwise pretty much the same), I too had the situation you have with the shift knob. I wound up heating it in the middle and bending it to fit. It lasted the 18 years I drove it that way before I sold it on just recently. I'm sure it'll still be working just fine after you and I are long gone from this planet.

    SJ

    IMG_2542.jpg
    Last edited by Sgt Jiggins; 07-18-2019 at 13:51. Reason: added image

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    shifter coupler (1).jpg
    Here is the start of the shifter coupler. Rough block of steel.
    Will be cutting the long shifter down to size.

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    NP420 with shifter mod (1).jpg
    Made this from the original "highboy" stick shifter.
    Lots of room for the nitrous bottle now.........

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    4 Star General nattieleather's Avatar
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    Quote Originally Posted by OutpostM37 View Post
    Made this from the original "highboy" stick shifter.
    Lots of room for the nitrous bottle now.........
    I know that is just a tongue in cheek statement, but I triple dog dare ya to hook up nitrous and post both pics and video....LOL!

    Good job on the shifter should give you lots of easy shifts going forward.

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    .
    Last edited by OutpostM37; 07-27-2019 at 18:45.

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    Senior Chief/Moderator hndrsonj's Avatar
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    Or just buy the correct shifter from Vintage Power Wagons and be done with it.....
    1951 Reo M48 Deuce Tractor
    1962 Dodge M37B1 w/w
    1951 Willys M38

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    Quote Originally Posted by hndrsonj View Post
    Or just buy the correct shifter from Vintage Power Wagons and be done with it.....
    Sometimes it is more satisfying to build a part, than to purchase it.
    Everyone has different priorities.

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