Your front uses a Banjo Bolt to the caliper, look for 3/4 ton chev front
1980 and see that they use the 80mm calipers.
On Sun, Apr 25, 2021 at 1:56 PM Trevor Pordage
wrote:
> Thanks ken
> that info is of great help
> i do have 1 spare rotor that came with the coach but it is so close to the
> limit of thickness i am reluctant to use it.
> i have purchased 2 replacement eldorado rotors from rockauto for 77
> dollars australian each delivered.
> I hava a Mate that has a small engineering shop and hopefully i will be
> able to use his lathe and milling machine
>
> thanks trevor
>
> > Trevor,
> >
> > Maybe this will help: Brakes Upgrade Spreadsheet - (
gmcmhphotos.com)
> >
> >
> > It's old, making prices, even in US, absurd. And doesn't seem to include
> > any drawings, but you should be able to take any required dimensions from
> > your old parts. IIRC, the only changes to the discs was to enlarge the
> > center hole to fit the GMC flange and drill the 8-lug bolt pattern.
> >
> > Good luck!
> >
> > Ken H.
> >
> >
> > On Sun, Apr 25, 2021 at 6:41 AM Trevor Pordage
> >
> > > hello Ken Henderson
> > > I am trying to find info on the brake system of Bobby Moore's old
> coach. I
> > > have had one of the middle calipers sieze and ruined a rotor, do you
> still
> > > have the spreadsheet regarding parts used from Bobby, i believe the
> rotors
> > > I need are cadillac but I will need to have them machined here in
> > > Australia. do you also have the details of what machining is required
> > > --
> > > Trevor
> > > Brisbane Australia
> > > Siesta Koala 76 Edgemont (old Bobby Moores)
> > > 71 Cadillac Eldo Convert
> > > 58 Cadillac Eldorado Brougham Project
> > > _______________________________________________
> > > GMCnet mailing list
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> > >
> > _______________________________________________
> > GMCnet mailing list
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>
>
> --
> Trevor
> Brisbane Australia
> Siesta Koala 76 Edgemont (old Bobby Moores)
> 71 Cadillac Eldo Convert
> 58 Cadillac Eldorado Brougham Project
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
--
Jim Kanomata
Applied/GMC, Newark,CA
jimk
http://www.gmcrvparts.com
1-800-752-7502