Hydroboost Applications

[Willie G]

Hello all, I have a hydro-boost from a 2005 Denali XL, and was wondering if it was ok to use this in my 71 C10? ihave looked and could not find anyone using such a later model Hydro-boost. I read where they are mostly the same except for the accumulators. The accumulator on mine is larger than others ive seen. Any help on this would be greatly appreciated.

[jeffahart]

Sure if you can get it to bolted up and get a master mated. But that probably is a disc disc accumulator. Will it make a difference? Not sure. I am not a fan of mix and matching masters and boosters. Why go through the headache of figuring the proper rod when you can get the master you want with a booster. To me the master and the prop valve are the important considerations. You will get your boost, but master and prop have to deliver, and the rod to the master has to be correct. If your brakes don't perform or your pedal misbehaves, you will be wondering about pedal rod and master rod. Anyhow, I would try to get a master with a booster. Or find a combo of master and booster where someone knows the rod is the correct length.

The hydroboost upgrade is a pretty simple and fun project. When you are done... you'll have brakes!

j

[57taskforce]

Originally Posted by Willie G

Hello all, I have a hydro-boost from a 2005 Denali XL, and was wondering if it was ok to use this in my 71 C10? ihave looked and could not find anyone using such a later model Hydro-boost. I read where they are mostly the same except for the accumulators. The accumulator on mine is larger than others ive seen. Any help on this would be greatly appreciated.

I used probably the same booster for mine. The master is an off the shelf from napa for a 72 K20. The master pushrod length was correct. The only thing I’ve got left to do to mine is mount the booster push rod to the brake pedal. I haven’t had much time to work on my truck lately. The other thing you’ll have to deal with is standard inverted flare power steering box fittings and metric Oring fittings in the booster. My build thread in my signature shows how I dealt with that.

[Willie G]

Thanks for the reply Jeff. Reason I'm going with the hydro-boost is because the entire setup i have is from a donor Denali that was running( i have everything from the Denali). I don't have the original braking system from the 71 72 C10. I am staying with the front disc/rear drums for now. Still trying to see if the Denali brakes can be fabricated to fit the c10. I can get it to mount up easily. I'm thinking adjustment wont be too difficult. Any other suggestions on the truck? Again thank you.

[Willie G]

Thanks 57, I appreciate the help. your project is coming along nicely.

[jeffahart]

You can make anything work. But since you are staying disc drum for now, it looks like you will need to ditch the Denali master for a dual reservoir anyway. Then you can just get a master with the residual pressure valve included for the rear drums. Plus, I still see the silver accumulator as a question mark. I would go with an accumulator charged for a disc drum setup. If you can verify the silver will work then go with it.


j

[howell57]

What master-booster would bolt in to a 72 C10. Disk front-drum rear
TKX

[Bigdav160]

I used my OE power master cylinder. I just unbolted it from the vacuum booster and held it up with bungee cords.

I don't think there is any issues with the extra capacity of the accumulator. It's job is supply power assist in case the engine stalls. Disc-Disc would require more than Disc - drum. So likely you'd get an extra pump of the pedal in that emergency.