John, you are quite right. I appreciate the clarification and I hope I did not
mislead anyone. Thanks...Bob Fentress
---------- Original Message ----------------------------------
From: John Dorsey <jrdorsey@strato.net>
Reply-To: John Dorsey <jrdorsey@strato.net>
Date: Tue, 23 Mar 1999 11:57:54 -0800
>By trying to run rear discs with front drums I think you opening youself
>up to a lot of problems. I would suggest that you go to a junkyard and
>get the whole rear drum setup off a 79-81 firebird. I don't know for
>sure but GM was never one for making 2 parts where one will do and
>probly used the same axle housing just bolted different brakes on the
>end.
>
>Just a point of clarification, drum brakes have a residual pressure
>valve to keep the cups in the wheel cylinders seated, disc brakes use a
>o-ring type seal and seal tension keeps the pads against the rotor. If
>you use a drum brake residual pressure valve master cylinder on disc
>brakes it will wear the pads off in short order. Some disc conversion
>systems use a specially designed residual valve as an anti-backflow
>valve when the master cylinder is lower than the calipers.
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
|