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What’s the difference between 60-63 and 64 front brake drums?
Posted by: whubbell ()
Date: February 04, 2018 05:35PM

You’d think I would know this, but I don’t. Obviously the rear brake drums are different, but the fronts look the same to me, although I admit I haven’t measured them. They are listed as different part numbers, however, so what’s the difference?

Bill Hubbell,
President, Stock Corvair Group

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Re: What’s the difference between 60-63 and 64 front brake drums?
Posted by: Wagon Master ()
Date: February 04, 2018 05:57PM

The 64's are different in how the fit into the backing plate.

'64 Monza Coupe 140 4 speed
'61 700 Lakewood 95 4 speed
'69 Monza Convert. 140 Auto.

Been aircooled since 1973
Northwest Ohio

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Re: What’s the difference between 60-63 and 64 front brake drums?
Posted by: Vairismo ()
Date: February 04, 2018 05:59PM

I do know that the 64 drum has a groove that the backing plate edge rides inside of, like the LM drums. The 63s drum edge fits inside the backing plate edge, no groove.
Would they interchange? I don't know, doubt it.



Edited 1 time(s). Last edit at 02/04/2018 06:00PM by Vairismo.

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Re: What’s the difference between 60-63 and 64 front brake drums?
Posted by: whubbell ()
Date: February 04, 2018 07:25PM

Thanks for the information.

So I went out and compared the 1964 drum with an Nos 60-63 drum and confirmed the difference as above. However, it seems the 60-63 drum will still fit over the 64 backing plate, except you wouldn’t have the outer rim overriding (and I presume sealing) it.

I’ll stick with the ‘64 drums, obviously, but I wonder if anybody has any experience actually using a 60-63 drum on a 64?

Bill Hubbell,
President, Stock Corvair Group

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Re: What’s the difference between 60-63 and 64 front brake drums?
Posted by: caroseiii ()
Date: February 04, 2018 08:09PM

No, it will not work. Do you need 64 drums, Bill?

CRAWFORD

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Re: What’s the difference between 60-63 and 64 front brake drums?
Posted by: whubbell ()
Date: February 05, 2018 04:01AM

Do you have some for sale? I think mine are still usable, but I would consider replacing them.

Bill Hubbell,
President, Stock Corvair Group

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