Part # for Stock GMC Master Cylinder rebuild kit

[LarryW]

Anybody know the part # for stock GMC Master Cylinder rebuild kit?

Also, when I first got started in GMC'ing, I was told that there was a difference between the 73-76 MC and the 77-78 MC. Is there, and if so, what is
the difference and does it effect rebuild kit?
Thanks
--
Larry
78 Royale w/500 Caddy
Menomonie, WI.

 

[LarryW]

> Anybody know the part # for stock GMC Master Cylinder rebuild kit?
>
> Also, when I first got started in GMC'ing, I was told that there was a difference between the 73-76 MC and the 77-78 MC. Is there, and if so, what
> is the difference and does it effect rebuild kit?
> Thanks

OK, FYI. I was able to get the PN for the stock GMC MC. It is RAYBESTOS MK646, and is available on eBay and at Rockauto. Interesting enough, my local
parts houses do not have a listing for this number.

AND, anyone....Is there a difference between the 73-76 MC and the 77-78 MC and if so, what is the difference?

Thanks all.
--
Larry
78 Royale w/500 Caddy
Menomonie, WI.

 

[wally anderson]

> > Anybody know the part # for stock GMC Master Cylinder rebuild kit?
> >
> > Also, when I first got started in GMC'ing, I was told that there was a difference between the 73-76 MC and the 77-78 MC. Is there, and if so,
> > what is the difference and does it effect rebuild kit?
> > Thanks
>
>
> OK, FYI. I was able to get the PN for the stock GMC MC. It is RAYBESTOS MK646, and is available on eBay and at Rockauto. Interesting enough, my
> local parts houses do not have a listing for this number.
>
> AND, anyone....Is there a difference between the 73-76 MC and the 77-78 MC and if so, what is the difference?
>
> Thanks all.

Interestingly Gene Fisher's site shows a different Raybestos PN. 39075. Who knows why. I had a 39075 with stock brakes and it seemed OK.
http://bdub.net/gmcmotorhome.info/master%20cyl.html
http://bdub.net/gmcmotorhome.info/master%20cyl.html
--
Wally Anderson
Omaha NE
75 Glenbrook
Megasquirt III injection
Bob Stone hydroBOOOOST
Manny reaction arm system
Branscombe Kelsey Hayes park brake
http://wallyandsue.blogspot.com/

 

[LarryW]

Whoops...let me clarify that. The number RAYBESTOS MK646 is for the REBUILD kit, not for the whole MC..Sorry about that.
--
Larry
78 Royale w/500 Caddy
Menomonie, WI.

 

[les burt]

Didn't Albert Branscombe do some research into the later MC? I recall it being discussed here a few years ago.

Les Burt
Montreal
'75 Eleganza 26'

>
> Whoops...let me clarify that. The number RAYBESTOS MK646 is for the REBUILD kit, not for the whole MC..Sorry about that.
> --
> Larry
> 78 Royale w/500 Caddy
> Menomonie, WI.
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org