A-body 8-3/4 drums

[Ceedawg]

My friend sold his 69 Cuda this past weekend and the buyer was saying the drums I had were not right. Got me second guessing myself so I’m inquiring on here. My understanding was ALL 8-3/4 drums were made with the wing-flange, fronts didn’t have that piece. Even the 7-1/4 had them only smaller. Am I right?
My 68 340 GTS auto had them (bought in 1970)

 

[junkyardhero]

i'm not entirely sure what you're asking? are you talking about the "darth vader" drums?

 

[cudamark]

The flanged 10" rear drums started in 1970, and were the same ones used on a 7 1/4 too. They interchange with the non-flanged ones used on the '69 and earlier cars. the flanged ones just had a bit more cooling capacity.

 

[Ceedawg]

The flanged 10" rear drums started in 1970, and were the same ones used on a 7 1/4 too. They interchange with the non-flanged ones used on the '69 and earlier cars. the flanged ones just had a bit more cooling capacity.

My 68 had them and 7-1/4 are different size than the 8-3/4 (I tried to use them on the 8-3/4 iirr). I have a 69 notch I’ll go check it.

 

[Ceedawg]

i'm not entirely sure what you're asking? are you talking about the "darth vader" drums?

I used pics but I don’t see them now but yes that’s what I’m asking.

 

[junkyardhero]

@cudamark already answered but i'll echo his statement: it's a year break down, but the drums interchange between the small bolt units

 

[Professor Fate]

Agree with all of the above.
Your '68, which you bought in '70, probably just had some new drums thrown on it by the dealer.
And they WILL fit 7 1/4 rears if it was ordered and equipped with 10" brakes. Of course they won't fit 9" brake setups. It's a matter of the size braking system used, not the rear end size.

 

[Ceedawg]

Agree with all of the above.
Your '68, which you bought in '70, probably just had some new drums thrown on it by the dealer.
And they WILL fit 7 1/4 rears if it was ordered and equipped with 10" brakes. Of course they won't fit 9" brake setups. It's a matter of the size braking system used, not the rear end size.

I’m not above admitting I’m wrong. Too dark to look under both 69s I have, maybe tomorrow, both are 9” 7-1/4s. If only 3 years I imagine they’re hard to find.

 

[cudamark]

I’m not above admitting I’m wrong. Too dark to look under both 69s I have, maybe tomorrow, both are 9” 7-1/4s. If only 3 years I imagine they’re hard to find.

'66 to '72, so 7 years used the same 10" brakes on both 7 1/4 and 8 3/4 rear ends. Even real late '65's had them.

 

[cosgig]

Around here we call em “Canadian drums”. Supposedly the flange was made to shed the snow from the brakes and backing plates. But yes, they come in flanged and unflanged, and all small bolt 10” rear drums are the same size internally, and are used for both 7 1/4” and 8 3/4” rears.

 

[Daves69]

If it helps, my old '69 (8-3/4) drum and Centric side by side................