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Username Post: Brake Drum Question        (Topic#349131)
Posts: 271

Loc: OH where rust never sleep...
Reg: 03-17-13
01-12-18 10:37 AM - Post#2720858    

1949 and 1950 used the Huck brake and 1951 thru 1954 went to the Bendix style system. Will brake drums from a 1950 fit a 1951?


Chevs of the 40s

Honored Member
Posts: 27764
Loc: San Francisco, CA
Reg: 11-26-02
01-12-18 12:18 PM - Post#2720865    
    In response to belairbob50

  • belairbob50 Said:
.....Will brake drums from a 1950 fit a 1951?

Yes, sort of, although the swap isn't officially sanctioned. Specifically, the center hole is larger on the 49-50 drums, so they will have to center on the studs when installed on a 51-up car. Also, some (but not all) drums may contact the backing plate. This is easily remedied with some minor machining of the flange or rib at the open side of the drum. Certainly try the drum for fit first before deciding whether or not you want to use it.

I personally found this to be a satisfactory swap when I was young and perpetually short of cash. Your standards may be higher than mine.


Those who choose an automatic transmission want transportation. Those who choose a manual transmission want to drive.

Bel Air kiwi 
"3rd Year" Silver Supporting Member
Posts: 4328
Bel Air kiwi
Loc: New Zealand
Reg: 04-24-14
01-13-18 04:12 PM - Post#2720965    
    In response to raycow

Hi Bob, just to be clear what Ray is saying. The fitting of the early large center hole drum on a later Bendix drum car changes the load from the center hub and studs to just the studs.

That is from hub centric to stud centric.

So the studs now clamp the wheel on and support all of the vehicle weight.

It would be fine around the workshop and on the farm only, but I wouldn't like to use it at open road speed like that as the studs normally snap in high speed corners.
(You know how I know.)

Normally folks swap the whole rear end to get Bendix and the 3.55:1 diff but you can remove the axles and turn the axle boss on the early axles down to the Bendix size.

Personally I would just get some new drums so it is correct. They are not expensive.

Cheers Kiwi

48 3100 RHD, 51 Deluxe 4DR RHD, 51 Bel Air parts car, 52 Bel Air P-Glide LHD. Others 23T, 32 Tudor, 58 Edsel pacer 4DR HDT, 79 F250 351C RHD. 69,70,82 Capri. No mobile, no TV, and no Jap cars.

"They made a desert and called it peace." Tacitus

Posts: 271

Loc: OH where rust never sleep...
Reg: 03-17-13
01-14-18 08:22 PM - Post#2721058    
    In response to Bel Air kiwi

Thanks for the information.


Chevs of the 40s

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