Quote:
Originally Posted by jocko
Your new mc reservoir sizes are good to go for a disk/drum C10 setup, but your mc is for manual (non-power) brakes - this is the bore depth I think you are asking about in post #4(?). Pic in post #4 shows the deep bore in the mc piston. Power brakes require shallow depth hole to receive the standard intermediate pushrod (the little stub pushrod that protrudes from your booster). Recommend return your mc to swap for a power brake mc. There are other ways around this (custom intermediate pushrod) but getting the correct mc is easier in the long run, no guesswork involved. Sorry, probably not what you wanted to hear.
Out of curiosity - was this a power brake truck from the factory?
Also, can you confirm whether this is for a C10 or C20?
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Thanks. I'm sorry for my lack of knowledge on this, but if you see the picture in my first post on this thread it shows the MC I removed with a deep bore, that's what I thought was the original MC, but sounds like it was replaced at some point with something else.
This is factory power brakes on a 72 K5 Blazer. So the original MC with power brakes should have been the shallow depth? If that's the case, the PO must have changed the brake push rod to a longer one to use the MC I removed. Look at the pictures below of the rod in the booster. Even if I had a shallow depth MC, I don't think it would go on just looking at how far this rod sticks out. Can you tell if that has been changed as well? What should factory setup look like? Again, I'm sorry for all the questions, but I want to put it back correctly. Thanks!!