S10 wheel cylinders and rear brake lock up

I've held up to 12psi. Depends somewhat on how quickly the car builds boost. The pads and shoes contribute also.

An early model S-10 with manual brakes - I think I chose 1985 as the year model.
 
I've held up to 12psi. Depends somewhat on how quickly the car builds boost. The pads and shoes contribute also.

An early model S-10 with manual brakes - I think I chose 1985 as the year model.
Thanks.
 
I may have missed it, are these the rear brakes that are being discussed?

D
 
I have them and have never had a problem. Maybe if you stop like Starsky and Hutch you will but the average adult won't have a problem.
Thank you , I am doing the S10 's right now , I bought new steel braided brake lines ( instead of the rubber ) so I am gonna stick a small proportioning valve at the rear end , just in case thanks for your input
 
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