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Technical Truck Open Drive Center in Car Banjo?

Discussion in 'The Hokey Ass Message Board' started by Richard D, Jul 14, 2026.

  1. I have lost the axle/ring gear for my truck rear, plus the end bells are pretty bad. I also have the open drive ‘39 transmission Can I combine the center section and a banjo from a car? Is it a simple job? I don’t want to need to set up the differential with the shims and all those headaches. Yoke is missing too!
     
    Last edited: Jul 14, 2026
  2. I got another banjo from a '48(?) car, can I use the truck center section to convert to open drive?
     
  3. rusty valley
    Joined: Oct 25, 2014
    Posts: 4,508

    rusty valley
    Member

    Speedway sells the parts to convert to open drive.
     
  4. I’d rather use this center section if I can instead of spending over $300 on the Speedway parts.
     
  5. alchemy
    Joined: Sep 27, 2002
    Posts: 23,463

    alchemy
    ALLIANCE MEMBER

    You say center section and banjo as if they were two different things. Not sure I’m understanding what you are saying.

    An open drive truck ring and pinion can be put in a p***enger banjo housing. But it will require all the same shimming and checking as if you retained the closed drive torquetube. Or you can use a complete truck center and differential in the p***enger housings. But it also requires the shimming and adjustment. The gaskets on the sides of the banjo center are the shims and once you tear one apart, you basically need to start from scratch.
     
  6. RICH B
    Joined: Feb 7, 2007
    Posts: 6,298

    RICH B
    ALLIANCE MEMBER

    Don't overlook that you will need the truck yoke and are limited to truck gear ratios.

    Set-up isn't that complicated; when you get down to it.
     
  7. I dig what you’re saying about the terminology. Also, I forgot that you do need to shim it when you take it apart using the gaskets no matter what. I’m not overly concerned about the gear ratio. This is just gonna be around town cruiser. I wonder where I can get the yolk? All the ones that I’ve seen have splined. Mine has a woodruff key. If the yolk is real pricey, I might just go ahead and spend the money for the kit.
     
    Last edited: Jul 17, 2026
  8. Now I see the kit is under $300, and no h***le of all the shimming with the gaskets. That's how I will proceed.
     
    rod1 likes this.
  9. Deke
    Joined: Jun 13, 2006
    Posts: 139

    Deke
    Member

    Just did the speedway kit and am not impressed with the yoke clearances. Had to shim the splines .0065 on 3 of the splines to get the yoke to not flop around. It might work out of the box but not sure how the seal would like that loose yoke
     
    warbird1 likes this.
  10. warbird1
    Joined: Jan 3, 2015
    Posts: 1,482

    warbird1
    ALLIANCE MEMBER

    This seems to be pretty common with the Speedway kits, the kits from the Hot Rod Works were much better in that respect. They're what Speedway used to reverse engineer/copy in order to make their own kits...
     

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