bigger drum brake wheel cylinders

[novaderrik]

what is the application for the bigger S-10 wheel cylinders? what year? 2 wheel or 4 wheel drive?
i need more rear brake holding power for building boost when i get it to the track next month.

 

[Red Regal T]

They would be S-10 manual brakes. Sorry, not sure of the year, but they are 7/8" while the power brake model is 3/4". Someone will chime in with years.

 

[jsta6]

from www.gnttype.org:

Larger rear brake cylinders GM 18012305 .
EIS 104432 .
Bendix #WC37644T .

I think they are 1/16 bigger.

 

[ksmmspt]

So what is the actual procedure for upgrading to the S-10 cylinders? How difficult is the swap and can I use my stock wheels? I have the powermaster system in place. Is the gm part# listed above the best way to go or should I use the others listed? Where can I get the other parts? Thanks.

 

[Red Regal T]

It's a bolt in, or should I say clip in. They fit. I think they are the same dimensions except for the inside diameter of the pistons.