1946 Chevy Pickup tranny

Discussion in '1936-1946' started by Jeff Cherney, Jun 5, 2021.

  1. Jeff Cherney

    Jeff Cherney Member

    Joined:
    Dec 8, 2020
    Messages:
    7
    I recently purchased my pickup that has a 4 speed and noticed a small leak from the tranny. How and where do I check level? Also what do you recommend for oil and how much is required?
    Thanks in advance
     
  2. Bill Hanlon

    Bill Hanlon Member

    Joined:
    Jun 4, 2002
    Messages:
    2,602
    Location:
    Fredericksburg TX
    I don't know what 4 speed transmission pre-48 Chevy trucks used, but the SM-420 that were used in 48 and later have a plug with a square head on the passenger's side. Remove the plug. Fill with GL-4 (NOT GL-5 which is bad for brass parts like synchros) until it dribbles out. Replace the plug.
     
  3. Jeff Cherney

    Jeff Cherney Member

    Joined:
    Dec 8, 2020
    Messages:
    7
    Thanks Bill,
    As usual you are the go to guy that has the answers!
     

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