Register now to get rid of these ads!

Hot Rods Flathead driveline question?

Discussion in 'The Hokey Ass Message Board' started by MGK, Mar 16, 2022.

  1. MGK
    Joined: Sep 11, 2006
    Posts: 280

    MGK
    Member
    from Ohio

    Hello,
    I am asking for the best flathead V8 automatic driveline configuration for highway speeds?

    I know there are bits and pieces to my question on here in other posts but I'm having trouble completing the puzzle.

    Your help/advice is appreciated. Shifting gears is cool, but not for my situation.

    Thanks, Chris
     
  2. Beanscoot
    Joined: May 14, 2008
    Posts: 2,369

    Beanscoot
    Member

    An AOD with adapter to the flathead to start this thread off....
     
    Flathead Dave likes this.
  3. PotvinV8
    Joined: Mar 30, 2009
    Posts: 219

    PotvinV8
    Member

    Beanscoot's got the answer. I put a 4L60E behind a 302 Ford, so that might be possible with an adapter or two, but doesn't really make sense as the AOD should be fine up to 4-500 HP.
     
  4. MGK
    Joined: Sep 11, 2006
    Posts: 280

    MGK
    Member
    from Ohio

    Any particular AOD? I'm running a 49 truck motor. Is one better/easier to install?
     

  5. Flathead Dave
    Joined: Mar 21, 2014
    Posts: 3,672

    Flathead Dave
    ALLIANCE MEMBER
    from So. Cal.

    I'm using the Speedway C4 to Flathead Trans adapter kit for my C4. Normal drive shaft to a 9" rear. The 9" is over kill but I have it so I'm using it.
    Go with an 8" rear with highway gears and you'll be fine.
    Hope this helps.
     
  6. Beanscoot
    Joined: May 14, 2008
    Posts: 2,369

    Beanscoot
    Member

    The better AOD to use is the pre-electronic one, I think the last non electronic ones were around '91 or '92. Use a V8 unit, not the V6.
    Also the early AODs had problems with oiling which was fixed by '87 IIRC.
    There is a throttle valve linkage which must be properly adjusted or the transmission will be damaged in short order.

    If you don't need fast acceleration from a stop, the C4 with low numerical rear gears option is also a good one.
     

Share This Page

Register now to get rid of these ads!

Archive

Copyright © 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.