1971 Duster 340 10" front drum brakes - what other Mopar brake drum hubs will fit?

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Duster256

Duster256

Honolulu, Hawaii
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My car currently has a Wilwood 140-2713 front drag disc brake conversion kit, 4.5" big bolt pattern, that uses my existing OEM 10" drum brake spindles. The Wilwood drag disc brakes ares noisy and makes a loud "shhhhhhh" sound when braking (I've been told by the Wilwood tech line that this sound is normal for a drag brake). They're too noisy for me and so I plan to go back to OEM front drum brakes, but 10" A-body front drum brakes are hard to come by.

I'd like to know if other body 10" front drum brake hubs (B-body, etc.) will fit my A-body spindles, or if I can only use A-body 10" drum brake hubs. And do these hubs come in BBP or do I need to take them to be drilled to BBP?. Thanks FABO nation from a newbie. Dave
 
A-body Small bolt pattern is the only 10" drums that will fit. It sounds like your best option would be to swap over to the later 73+ BBP discs.
 
R72Demon said:
A-body Small bolt pattern is the only 10" drums that will fit. It sounds like your best option would be to swap over to the later 73+ BBP discs.
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Thanks Demon. Swapping over to 73+ BBP discs would require me to also swap out my 10" drum brake spindles for 73+ disc brake spindles, correct?
 
Duster256 said:
Thanks Demon. Swapping over to 73+ BBP discs would require me to also swap out my 10" drum brake spindles for 73+ disc brake spindles, correct?
Click to expand...

yes, you'd need to swap the spindle as well as the upper control arm or use an upper ball joint adapter (the 73+ spindles use the larger ball joint)
 
If you have drilled and grooved disc's, they are definitely noisy. If you have 14" tires you can't use the 11 3/4 discs from the Cordoba which I use on my 71 Cuda with 15" tires.
 
Duster256 said:
My car currently has a Wilwood 140-2713 front drag disc brake conversion kit, 4.5" big bolt pattern, that uses my existing OEM 10" drum brake spindles. The Wilwood drag disc brakes ares noisy and makes a loud "shhhhhhh" sound when braking (I've been told by the Wilwood tech line that this sound is normal for a drag brake). They're too noisy for me and so I plan to go back to OEM front drum brakes, but 10" A-body front drum brakes are hard to come by.

I'd like to know if other body 10" front drum brake hubs (B-body, etc.) will fit my A-body spindles, or if I can only use A-body 10" drum brake hubs. And do these hubs come in BBP or do I need to take them to be drilled to BBP?. Thanks FABO nation from a newbie. Dave
Click to expand...
Any internet research that I've found about Wilwood brake noise has nothing to do with it being "normal" as in "yeah but it's ok". Sounds like a tech brushoff to me.
 
tonysrt said:
If you have drilled and grooved disc's, they are definitely noisy. If you have 14" tires you can't use the 11 3/4 discs from the Cordoba which I use on my 71 Cuda with 15" tires.
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Tony, yes, my Wilwood discs are the drilled/slotted ones. The previous owner even bought Wilwood’s “street” pads at their tech line’s suggestion but they made no difference in reducing the noise.
 
Are you wanting to stay with the 4.5x5 bolt pattern ? What is your driving like ? Mild , spirited or maniacal ?

I have 4 wheel discs on my 68 Barracuda and manual drums on my 69 340 Swinger . I realized I don’t drive like an idiot and the drums work fine . But I used a smaller bore master cylinder and larger bore wheel cylinders .
BTW…the Dart is a 408 W2 Solid roller 4sp.
 
this noise is quite common in the two wheeled world where drilled rotors are the norm. the cause can be anything from a symptom of the floating caliper design, improper sequence on install (centering hub or wheel), debris on the rotor or pads. or, as some have hypothesized, air or gas being trapped and released in the holes during operation.

i'd go back and check the install with a critical eye.

fwiw, when i had wilwoods on the street they were always a little grumbly. after they were properly bedded and has some miles they were better but nowhere near what i'd describe as quiet.
 
mbaird said:
Are you wanting to stay with the 4.5x5 bolt pattern ? What is your driving like ? Mild , spirited or maniacal ?

I have 4 wheel discs on my 68 Barracuda and manual drums on my 69 340 Swinger . I realized I don’t drive like an idiot and the drums work fine . But I used a smaller bore master cylinder and larger bore wheel cylinders .
BTW…the Dart is a 408 W2 Solid roller 4sp.
Click to expand...
Yes, my preference is to stay with the BBP, and my driving is between mild amd spirited and definitely not crazy. I haven’t ruled out going back to drums in all 4 corners - but is it possible to redrill Duster SBP 10” front drums/hubs to BBP?
 
I've been driving Honda's from 1980 and I felt they had the worst brakes of any car I ever owned. My 80 Civic had solid front rotors and if I stopped hard at 70 MPH the rotors warped. My 90 Accord was a little better but still not that good. My other Honda's also left a lot to be desired in the braking department. So when my Odyssey needed rotors I went with the drilled and slotted and they are very noisy, almost to the point that the pads are metal on metal. I think Honda has improved, but with the Van I wanted the best combination possible with the front brakes. The rotors for the 80 Civic were $10, so I always kept a spare pair. The 90 Accord were the hardest rotors to change because you had to disconnect the ball joint to get at the bolts in the rear of the rotor. Now the worst part of changing the rotors on the newer cars is a screw in the rotor, that you have to use an impact hammer to get out. Still a very unorthodox way to remove the rotor. I've come to accept the short coming of the brakes, with the quality of the rest of the vehicle. Again, those drilled and slotted rotors are very noisy and most likely what you hear.
 
Duster256 said:
Yes, my preference is to stay with the BBP, and my driving is between mild amd spirited and definitely not crazy. I haven’t ruled out going back to drums in all 4 corners - but is it possible to redrill Duster SBP 10” front drums/hubs to BBP?
Click to expand...
yeah it's possible to go out to 5X4.5 on the 10" hub, there's enough meat. you just need a competent machine shop to do the work.

obviously you'll need to drill the drum as well. down the line if you need to replace a drum, you'll need to buy another small bolt and have it drilled because factory big bolt drums have a larger center register.
 
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