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brakes difference 7-1/4 & 8-3/4 axles
#2625787
02/25/19 11:17 AM
02/25/19 11:17 AM
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Joined: Nov 2003
Posts: 1,033 Madison, Wisconsin
chrisnben
OP
super stock
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OP
super stock
Joined: Nov 2003
Posts: 1,033
Madison, Wisconsin
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Could a person use the backing plates and 10 x 2" brakes from a 7-1/4" rear to swap to a 8-3/4" all from E-body cars??
'70 Cuda "Badfish 2"- in the works
Home of MoPar University- We school 'em one at a time!!
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Re: brakes difference 7-1/4 & 8-3/4 axles
[Re: chrisnben]
#2625806
02/25/19 12:28 PM
02/25/19 12:28 PM
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Joined: Jan 2005
Posts: 4,450 Michigan
MarkZ
Worthy
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Worthy
Joined: Jan 2005
Posts: 4,450
Michigan
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When I swapped an 1966 8.75" housing into my car the brakes from the 7.25" it was replacing all transferred over. Didn't even need to change backing plates.
1987 Fifth Avenue - 512/518/D60
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Re: brakes difference 7-1/4 & 8-3/4 axles
[Re: chrisnben]
#2625872
02/25/19 02:55 PM
02/25/19 02:55 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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You might measure/compare (between the two) the shoe width area in the drums & the shoe width itself & the "offset" of the b plates. EDIT & axle flange distance out from b plate
Last edited by RapidRobert; 02/25/19 02:55 PM.
live every 24 hour block of time like it's your last day on earth
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Re: brakes difference 7-1/4 & 8-3/4 axles
[Re: Pntastar69]
#2625885
02/25/19 03:23 PM
02/25/19 03:23 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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I ain't eyeballed em but would it be possible to drill the 5th hole in the retainer? (assuming everything else matched).
live every 24 hour block of time like it's your last day on earth
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Re: brakes difference 7-1/4 & 8-3/4 axles
[Re: chrisnben]
#2626144
02/26/19 12:38 AM
02/26/19 12:38 AM
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Joined: Jan 2003
Posts: 20,204 Park Forest, IL
slantzilla
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 20,204
Park Forest, IL
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My experience is that BBP brakes will interchange. E-body should be BBP.
"Everybody funny, now you funny too."
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Re: brakes difference 7-1/4 & 8-3/4 axles
[Re: Pntastar69]
#2626145
02/26/19 12:39 AM
02/26/19 12:39 AM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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7 1/4 backing plates have 4 holes where the 8 3/4 plates have 5 holes. the four holes line up, the fifth hole is redundant.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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