Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

Need help with tranny id (please)

Discussion in 'The Garage' started by Chevy409, Oct 20, 2002.

  1. Chevy409

    Chevy409 Registered Member

    Joined:
    Mar 5, 2001
    Posts:
    81
    Likes Received:
    0
    I just bought 3 standard trannies, all 4 speeds, and need a good site for decoding these suckers. They're all cast iron and look very similar but each has different numbers. Anyone point me in the right direction? Oh, and they all came from Chevys, two from 4-wheel drives and one came from a 2 wheel drive. Thanks /forums/images/graemlins/ears.gif
     
  2. Chevy409

    Chevy409 Registered Member

    Joined:
    Mar 5, 2001
    Posts:
    81
    Likes Received:
    0
    ttt /forums/images/graemlins/confused.gif
     
  3. 4x4Freak

    4x4Freak 1/2 ton status

    Joined:
    Apr 21, 2002
    Posts:
    792
    Likes Received:
    0
    Location:
    Lubbock, TX
    Chevy used two different 4spds that I know of. They used the SM420 in the 50s-70s(???) and then switched to the SM465 after that.

    The location of Reverse is the easiest way to tell the difference between the two. The 420 has reverse down and to the left while the 465 is down and to the right. I believe one of them also has an inspection plate on both sides; I think it is the 465, but I'm not too sure. Hope this helps.
     

Share This Page