mfg Posted September 30, 2022 Report Share Posted September 30, 2022 If I needed a front brake rotor for a 1985 Avanti, I'd probably go to my local 'flaps' store and ask for a 1983-84 Ford Mustang brake rotor...True? Link to comment Share on other sites More sharing options...
pantera928 Posted September 30, 2022 Report Share Posted September 30, 2022 true Link to comment Share on other sites More sharing options...
mfg Posted September 30, 2022 Author Report Share Posted September 30, 2022 4 hours ago, pantera928 said: true Sorry, the answer here is false! Link to comment Share on other sites More sharing options...
pantera928 Posted October 1, 2022 Report Share Posted October 1, 2022 21 hours ago, mfg said: Sorry, the answer here is false! The old 50/50/90 rule strikes again Link to comment Share on other sites More sharing options...
mfg Posted October 2, 2022 Author Report Share Posted October 2, 2022 18 hours ago, pantera928 said: The old 50/50/90 rule strikes again 50/50...always worth a try!! Link to comment Share on other sites More sharing options...
silverstude Posted October 3, 2022 Report Share Posted October 3, 2022 85 Camaro rotor Link to comment Share on other sites More sharing options...
mfg Posted October 4, 2022 Author Report Share Posted October 4, 2022 On 10/3/2022 at 12:22 PM, silverstude said: 85 Camaro rotor Yep, that's it! Link to comment Share on other sites More sharing options...
pantera928 Posted October 4, 2022 Report Share Posted October 4, 2022 24 minutes ago, mfg said: Yep, that's it! So I guess that did not include the hub since the bolt pattern is different. Link to comment Share on other sites More sharing options...
mfg Posted October 4, 2022 Author Report Share Posted October 4, 2022 2 hours ago, pantera928 said: So I guess that did not include the hub since the bolt pattern is different. They indeed included the GM hub...then used adapter plates to convert bolt pattern. Link to comment Share on other sites More sharing options...
Geoff Posted December 10, 2022 Report Share Posted December 10, 2022 Okay, whoa. Wait a second. I haven't gotten into the deep tear down on my car, but you mean to say there are 5 on 4.75" rotors on Blake Avantis, and then an adapter mounted on top to revert to the 5 on 4.5" pattern? I'm converting to 5 on 4.75" when I switch to C4 'Vette suspension, but next spring I'll find the tear down a little more interesting. Now to bring relevance from mfg's original post: If anyone wants 1985 front rotors, I will have two takeoffs I will not need. Link to comment Share on other sites More sharing options...
mfg Posted December 10, 2022 Author Report Share Posted December 10, 2022 1 hour ago, GeoffC312 said: Okay, whoa. Wait a second. I haven't gotten into the deep tear down on my car, but you mean to say there are 5 on 4.75" rotors on Blake Avantis, and then an adapter mounted on top to revert to the 5 on 4.5" pattern? I'm converting to 5 on 4.75" when I switch to C4 'Vette suspension, but next spring I'll find the tear down a little more interesting. Now to bring relevance from mfg's original post: If anyone wants 1985 front rotors, I will have two takeoffs I will not need. Hi Geoff..yes, Avanti definitely used adapters to convert the GM bolt pattern to 'Stude Style'! There was a factory recall...the earliest adapters were made of aluminum and developed cracks in use......The later adapters (as on my '85) are made of steel. Link to comment Share on other sites More sharing options...
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