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1938 ford 4 speed

Discussion in 'The Hokey Ass Message Board' started by devotion, Dec 10, 2012.

  1. devotion
    Joined: Apr 15, 2009
    Posts: 193

    devotion
    Member
    from idaho

    Picked up a 4 speed to put behind a 38 flathead the other day... I know it's not the desirable 3 speed, but what can I expect with it? A really low first gear I'm assuming... What about the other 3? It has stock gears in it
     
  2. devotion
    Joined: Apr 15, 2009
    Posts: 193

    devotion
    Member
    from idaho

    Rear end is a 48 banjo with 3.54 gear ratio
     
  3. Hnstray
    Joined: Aug 23, 2009
    Posts: 11,583

    Hnstray
    ALLIANCE MEMBER
    from Quincy, IL

    It's a truck transmission and offers nothing over a stock 3 speed passenger car trans from the era for a street driven automobile. In my opinion, it is a liability because of it's weight and bulkiness.

    I would recommend either a floor shift '39 style or side shift '40 through '48 trans.

    Ray
     
  4. Saxon
    Joined: Aug 9, 2008
    Posts: 2,157

    Saxon
    Member
    from MN

    What to expect. Well 4th is 1:1 like 3rd on a three speed. Not sure all actually gear rations. 1st is a stump puller and you won't use it much, if ever. So not much difference till it comes to shifting. If the early 4sp then no synchros, they are spur cut gears (some synchro'd 4sp's after 48). Get used to double clutching or slow shifting. I have one in my truck and I actually like it. But my truck isn't a hotrod. It's a truck.

    Parts drawing for ID help of your trans.
    http://www.vanpeltsales.com/FH_web/flathead_drawings_trans.htm
     
    Last edited: Dec 10, 2012

  5. devotion
    Joined: Apr 15, 2009
    Posts: 193

    devotion
    Member
    from idaho

    That's the advice I'm looking for. If thank you. If I built the car with this transmission and later on down the road decide to swap out gears is it possible?
     
  6. Saxon
    Joined: Aug 9, 2008
    Posts: 2,157

    Saxon
    Member
    from MN

    I wouldn't put the 4sp in a car. sorry. I'd look for a 3sp. Not that you couldn't... but I think you'd be better off being (I'm assuming) it's all torn apart now. If it was a truck, i'd say go for it!
     
  7. Hnstray
    Joined: Aug 23, 2009
    Posts: 11,583

    Hnstray
    ALLIANCE MEMBER
    from Quincy, IL

    If the trans is the same length as the 3 speed and is also a torque tube style connection to the driveshaft, then, yes, you could swap it out later.

    But why do the work twice?

    Ray
     
  8. greaseyknight
    Joined: Sep 27, 2010
    Posts: 224

    greaseyknight
    Member
    from Burley WA

    I don't believe their are any different gearsets available for it. Its a spur gear transmission, more like what you would find in an 18 wheeler then anything else. So you have to double clutch going both up and down the gears. I've also found there to be quite a gap between 3rd and 4th, with the 3.54 rear in my truck. Kinda a pain when driving around town. All this is presuming that you have a Warner T-9 :)
    The ratios are:
    1st=6.4
    2nd=3.09
    3rd=1.69
    4th=1.0
     

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