| |
Click on image for the lowdown. 
====
| | |
0 members (),
83
guests, and
0
robots. | | Key: Admin,
Global Mod,
Mod | | | Forums66 Topics128,115 Posts1,056,292 Members48,439 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Sep 2005 Posts: 1,028 'Bolter | | 'Bolter Joined: Sep 2005 Posts: 1,028 | I did a search but found nothing related to this
A friend told me about a remote vacuum powered brake assist. I guess you can mount it any where on the truck and connect it to your brake system (to the hydrolic lines) and vacuum system and it will assist in increasing the stopping power without increased leg power.
I would have to change my fuel pump to a dual fuel/vac pump for it to function properly but that is probably a good idea anyway.
Anyone know about these vac activated brake assists?
Thanks
Rich
| | | | | Joined: Sep 2005 Posts: 1,028 'Bolter | | 'Bolter Joined: Sep 2005 Posts: 1,028 | | | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | Hydro-Vac. Mostly found on 1 1/2 ton and larger GM trucks, standard equpment on many 2 ton and larger after '55. It was an option on the 1/2-1 tons starting around 1955. It's more or less a second master cylinder with a booster on it. I've seen them mounted in various locations, usually on the frame under the cab on the passenger side rail. They can be found in salvage yards, but overhaul parts are difficult, if not impossible, to get. That's why I passed on one I could have got for $5, couldn't get parts.
A modern equivalent would be the Midland Booster. Jeg's and Summit both carry them. those are commonly used on Pro-Mod and Pro Street cars, and mount bqasically the same.
Bill Burmeister
| | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | I believe he'd be meaning the hydrovac or multi-vac units standard on the big bolts, doesn't have any connection to the fuel pump [uses intake vacuum], that double acting pump is for vacuum wiper assist Bill | | | | | Joined: Sep 2005 Posts: 1,028 'Bolter | | 'Bolter Joined: Sep 2005 Posts: 1,028 | Thanks guys
Does anyone make an aftermarket remote similar to these for an upgrade?
Rich
| | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | I checked out Jegs, Summit, and even Speedway, none of them list it anymore. But I did find this site that has listings for rebuilt originals. Might be worth checking out.
Bill Burmeister
| | | | | Joined: Mar 2004 Posts: 3,068 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 3,068 | Just go to a truck and powertrain shop, you can still buy the older hydro's. I just bought one identical to my 48's earlier this year but doesn't really need to be exactly the same. Go ask an expert at the truck shop,
Scott | | | | | Joined: Aug 2004 Posts: 54 'Bolter | | 'Bolter Joined: Aug 2004 Posts: 54 | I have a new hydro vac for sale, never been used. let me know if interested [email protected]. I bought it on ebay, but I never installed, I can send pictures. | | |
|
|
| |
