cmcr0703

My brakes haven't been the greatest on the truck even with the disc brake conversion on the rear. So thought it was time to try the hydro booster. I bought the master and booster for a 2004 Chevy Silverado with the duramax. Then the lines from a 2004 Chevy suburban. I made a plate at work to mount the booster too out of stainless and had a friend weld spots for a key to match up in the key way of the booster. Did some fileing and worked out great. Pretty much bolt in. Except for the rod that connects to the pedal. I ended up cutting the rod and threading it and cutting the eye off the old vacuum booster and threading that. The rod from the hydro booster I threaded to 7/16 14, and the eye piece to 1/2 13. Ended up wielding 2 7/16 14 nuts to gather then welding those to 2 1/2 13 nuts to link the two together to get the proper eye and pedal height. The response of the brakes is so much better now. definitly a good upgrade.

cmcr0703

thrashingcows

Very Nice...Thanks for sharing your conversion. I can't wait to be Another Happy Hydroboost customer.

j.fonder

tcows, you've been saying that since I did mine in APRIL!

get out there and git r' dun!

boeingguy

did you have to do any changes to vacume pump or power steering pump? very nice install

cmcr0703

Thank you Thrashingcows. Boeingguy no modification to the power steering pump. Just have to T the returns togather. At some point I'd like to switch the vacuum pump and PS pump out for 1995-2001 style setup. They have the 2 returns on the resivoir. I'm not too sure what to do with the vacuum pump. My truck is manual everything inside the cab so don't really need the vacuum pump.

ChrisLib

I see new brake line, is that to adapt the GM thread size on the master to Dodge`s fitting size on the distribution block?

mknittle

If you don't need the vacuum pump you can take the diaphragms off and make plates to covers to replace them.

mknittle

It really isn't a hard swap at all. The plate on the ones that Justin and I got is a direct fit. the pushrod is the only thing that need modification.

The only thing that makes it a little complicated is if you have a RR steering gear You have to get a little creative with the pressure hose but that too is an easy fix.

mknittle

The best part is you don't ahve to deal with the disposable Dodge master cylinders

boeingguy

I see booster an MC easy to find , but am confused about which lines to buy. Do u have any P/Ns. also a pic of lines going to pwr steering pump would be nice. And one last one, what a bout proportion / combination valve ? use it or remove it

mknittle

Are you going to do the RR steering at the same time? I think that's what I would do. Do it once and be done with it.
Like I really know what that's like!

boeingguy

lol, honestly i need to educate my self on that, dont know enough about it. been working so long to get brakes.......but better steering control would be good

j.fonder

read through this. it's my writeup on a hydroboost conversion. I used 2000 chevy 3500 booster/master and the 98+ 2nd gen power steering pump.

Hydroboost conversion - Dodge Cummins Diesel Forum

bryson711

This is the next thing on my hit list. Couple questions. Are the 2 brake lines the same size as factory that ho from the proportioning valve to the booster? Also did you just buy the 2 pressure lines of the suburban? We're all the fitting the right size?