What is Hydroboost Braking? The vast majority of power braking systems use engine vacuum and a large diaphragm within the brake booster to multiply the driver's brake pedal pressure. In contrast, Hydroboost braking uses the hydraulic pressure from the power steering pump to provide power braking. The Hydroboost unit is made by Bendix and is mostly used by GM and Ford for their diesel pickup trucks (e.g. F350) because diesels produce no vacuum. They are also used in the Mustang GT and a few other performance cars. In brief, Bendix makes one core for Ford and a different one for GM. I learned the hard way that a Ford unit will not fit a Camaro. It appears that all the aftermarket Hydroboost units are built by Hydratech Braking Systems http://www.hydratechbraking.com/ which only sells through its dealers, including Classic Performance Products (CPP). Hydratech buys new Bendix units, adds a custom mounting plate for each type of car, and a top-of-the-line braided hose kit and adapters for the type of car. Advantages A Hydroboost system provides superb power braking even in cars with high performance engines that produce very little vacuum. It makes your hot rod much SAFER! Significantly, the unit is also much smaller than any vacuum power booster, making it easier to install a Big Block, large valve covers or other items. As you can see in my pictures, it is much easier to work in that area of the engine compartment. Installing on my '81 Z28 The first picture shows the factory vacuum power booster. Notice that a vacuum canister was added to improve the braking. Not in the picture, I had also added a small electric vacuum pump to improve the braking. Even with the add-ons, I could NOT lock the brakes even with 200+ lbs of pedal force. Particularly challenging was stop and go city driving where the engine was rarely above idle. (BEFORE - Factory power brakes augmented with Vacuum Canister - very marginal brakes) After some experimentation, I finally purchased and installed the Hydroboost package from CPP with chrome master cylinder and complete hose package. The fully installed system is pictured below: (AFTER - Hydroboost fully installed.) Fantastic Braking! The end result is nothing short of a phenomenal improvement. The brake pedal feel is excellent and I can easily lock the wheels. It is not overly sensitive, more like a BMW than the too-sensitive Pontiac G6 I recently rented. I highly recommend it. Details While I estimate a typical installation would take 5 - 6 hours, it took me much longer because I also replaced the master cylinder and front brakes lines (with a good kit from NPD) and had to significantly re-bend the spiral ends to fit the final non-stock position of the proportioning valve. I also had to make a new partial rear line and deal with some problems described below. (Picture of the basic Hydroboost unit with mounting plate specifically for Camaro.) My '81 has metric "O-ring" power steering parts (actually '86 IROC parts). This was no problem because the Hydratech supplied parts included custom brass O-ring inserts. However, since I had already purchased Aeroquip O-ring adapters, I used those instead: (On the left are the supplied parts, on the right what I used.) I want to emphasize that there were absolutely NO problems with the parts supplied by Hydratech. Since I had "experimented" with Hydroboost before purchasing the CPP product, I had been in touch with owner Paul Clark and can vouch that he gives good advice and good service. The Hydratech supplied Hydroboost unit, Aeroquip Teflon braided hoses, connectors, adapters and other parts are absolutely top quality. Even the supplied bolts are premium chromed. The problems were all due to the master cylinder and proportioning valve added by CPP in their "package": http://www.classicperform.com/NewProducts/2006/NewFiles/HydroBoost.htm First, the proportioning valve was attached to the side and below the master cylinder with a heavy bracket. Even though this was labeled a "70-79 Camaro" part, there is no way it will fit a 2nd gen, as it overlaps the fender by about 2 inches. Therefore I ended up mounting the proportioning valve underneath the master cylinder, which required making short custom brake lines. (It took several tries before the flair ends didn't leak.) Next, the master cylinder had a massive leak which took an hour to correct. Buying it As I mentioned, the Hydratech kit is absolutely top quality. They sell only through dealers and dealers are listed on their website. I bought the CPP "complete" chrome kit through Summit Racing, but you may want to just buy just a basic kit (with hoses!) and an alternate master cylinder. (The stock 1.25" bore master cylinder has too big a bore to fit the Hydroboost unit.) A basic kit with hoses and the necessary adapters is $695 (list price). While Hydratech doesn't sell the Hydroboost units retail, they do sell accessories, hoses and master cylinders: http://www.hydratechbraking.com/products_old/accessories.html Don't buy the "Universal kit"; I bought it too and returned it; it will not fit without major mods. Don't buy any used Ford GT units on Ebay; I tried that too and they don't fit. Summary IMHO, it seems crazy to spend many thousands of dollars on your hot rod and hundreds or thousands of hours of your time, and then risk it all and your life with brakes that barely work. For the price of a new carb, you can have the best brakes on the road and enjoy your car more.