Re: 73+ A-body knuckle -- Drum or Disc?
[Re: Molloy]
#170266
12/18/08 10:10 PM
12/18/08 10:10 PM
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Joined: Jan 2003
Posts: 27,471
So Cal
autoxcuda
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Quote:
Cool, so I guess I just need a different bearing set than what's installed in the 11.75" discs?
There is no conversion bearing set. I don't think anyone makes a adapter ring to make up for the diameter difference??
And the spacing of everything else might be diffrent. You need to contact AndyF direct. If B-body spindle would work, I would think he'd have them listed in his installation instructions.
Are you going to run the AndyF custom spindles, 13" and brembo viper calipers??
Regardless, sounds like someone sold you the wrong part. Was it misrepresented or guaranteed to be a 73 A-body drum spindle. Does the AR Engineering site and/or his instructions list a casting numbers on the spindles to ID them??
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Re: 73+ A-body knuckle -- Drum or Disc?
[Re: DoctorDiff]
#170267
12/18/08 10:22 PM
12/18/08 10:22 PM
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Joined: Jan 2003
Posts: 27,471
So Cal
autoxcuda
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Quote:
Unfortunately, you cant change the inner bearing and race.
I sell a cr-mo spindle sleeve and conversion seal kit to adapt the late rotors to the early knuckles.
E-mail me if you are interested.
Do you sell a sleeve for an original A-body disk to big bolt pattern disk (small or large bolt pattern)?
The 68 S/S clone guys would be interested in that as well as original 66-72 A-body disk brake owners.
Scott Harvey had special large bolt pattern disk made for the 66 Trans Am cars. And Bob Tarozzi worked on the 66 Trans Am effort and later was chief engineer and designer for the 68 Super Stock cars. Those special trans am rotor were used on the 68 super stock cars to get big bolt pattern to match the rear big pattern.
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Re: 73+ A-body knuckle -- Drum or Disc?
[Re: Molloy]
#170270
12/18/08 10:38 PM
12/18/08 10:38 PM
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Joined: Jan 2003
Posts: 8,016
Polson, MT
DoctorDiff
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Posts: 8,016
Polson, MT
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The only difference between a '73-'76 A-body drum knuckle and any B-body drum knuckle is the diameter of the spindle where the inner bearing and seal ride.
Pre '73 A-body knuckles are totally different.
Last edited by DoctorDiff; 12/18/08 10:39 PM.
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Re: 73+ A-body knuckle -- Drum or Disc?
[Re: DoctorDiff]
#170271
12/18/08 11:02 PM
12/18/08 11:02 PM
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Joined: Jan 2003
Posts: 27,471
So Cal
autoxcuda
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Quote:
I haven't looked into a small bolt pattern DISC to large bolt pattern Disc swap, but I do make a small bolt pattern 10" DRUM knuckle to big bolt pattern disc conversion.
The small bolt disc/large bolt disc swap should be easy, however.
Looking to retain the KH calipers on a factory 66-72 disk brake car.
Significant market. As you go later into the 69-72 A-bodies, disc become more popular factory option.
The SSBC or MP conversions use a mustang rotor, mustang caliper, custom caliper adapter and bearing spacer.
If you could make a bearing spacer then... customers could buy one part, buy an under $50 parts store rotor and get big bolt pattern conversion. 
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Re: 73+ A-body knuckle -- Drum or Disc?
[Re: DoctorDiff]
#170273
12/18/08 11:12 PM
12/18/08 11:12 PM
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Joined: Jan 2003
Posts: 6,480
USA
Molloy
OP
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OP
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Joined: Jan 2003
Posts: 6,480
USA
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Quote:
The only difference between a '73-'76 A-body drum knuckle and any B-body drum knuckle is the diameter of the spindle where the inner bearing and seal ride.
Pre '73 A-body knuckles are totally different.
Ah so then I have the correct knuckles and the wrong rotors. Guess we need to talk about the CrMo sleave.
Sorry for the ignorance. I've taken a 3 year hiatus from my cars and displaced the mopar side of my brain.
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