Master cylinder help

[slenning]

Does any one know if GM has a 1 1/8" bore master cylinder in this style? I'm not having any luck trying to find one.:banghead: Asked a couple of dealers and they weren't too helpful.
https://static1.pt-content.com/images/noimg.gif (http://imageshack.us)or this

https://static1.pt-content.com/images/noimg.gif (http://imageshack.us)

[paul67]

Why are you after that bore size ?.

[72SSAbody]

yes, try one from a mid '90's caprice. But, with those style of MC's you just can't measure the bore diameter on the rear since they are a quick take up style.

Joe

[slenning]

Why are you after that bore size ?.
Sorry,I should have explained that. I am installing a Hydratech hydroboost unit and that is the bore size that was recommended by Paul. I have the 6 piston Baer 6S brakes front and rear.

[paul67]

I would have thought hydratech would know ,also it not only the bore size you need to know it also the throw as it the volume of oil that is moved.

[Skip Fix]

The 81 4 wheel disc Trans Ams have one similar to the upper one in 1 1/8. The lower one looks more like a truck MC