85 S-10 Rear Cyl Question

[54Rich]

I've read that the 1985 S-10 rear wheel cylinders with manual brakes are a direct upgrade for our cars. However, looking at the NAPA site I get conflicting information:

Quote:
Originally Posted by Dewey
The cylinders I got from Advance are part# W37644

Quick question: The 37644, list a line thread of 3/8 X 24 and the 87 GN list the line thread as M10 X 1.25 Are they close enough to work?

I copied this from another post, because of no answer. Anyone comment? I have to get into the brakes because I want to change the fluid and the rear bleeders are snaped off.

Thanks,

Rich

 

[turbo nasty]

The rain/wet road and a panic stop the rear will come around with the wheel cyl swap so be careful. I would not do it in a DD

 

[pdzz]

I have them in my T-type, the piston bore is bigger which in theory hold better on launches. I also use four secondary shoes as well. They will work fine as long as your brakes are adjusted properly. Phil

 

[turbofish38]

There is only one thread size on that particular type of cylinder. Besides M10 is freaking huge for a line. Sounds like a typo if you ask me.

Okay guys. If I hear another "the rear brakes lock up" comment my brain is going to lock up in a non stop rant. Consider this. The S-10 and the G-body share the same brake components. The only difference is the size of the cylinder and the MC on the manual brake truck. Sure they will lock in a panic stop. Learn how to drive and you wont have problems. I sure as heck dont.

 

[54Rich]

Thanks!

 

[Brer Rabbit]

Lock up brakes..

Agreed the only way they will lock up is if U have the shoes adjusted really tight, like I have mine right now. My brakes work great and I didnt even do the Two bigger shoe mod like posted. Go ahead and do it. The cars weigh 3500 pounds and need all the help they can get stopping.

 

[BlackMetal]

I'd say the two "long" brake shoes would be more dangerous than the upgraded cylinder. You'll only lock them up during a panic stop if you don't know how to handle non-ABS brakes (or, like already mentioned, if you have them adjusted stupidly tight).

Anyways I was curious about the thread pitch being labelled differently too so I'm glad it was brought up again.