FS: Hydroboost mounting adapters

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  • chevynut
    Registered Member
    • Nov 2011
    • 11015

    FS: Hydroboost mounting adapters

    I am now offering Tri5 Hydroboost brake booster adapters. Hydroboost braking systems operate off of your power steering pump, and provide much better braking than manual brakes or vacuum boosters.

    These adapter plates allow you to bolt an Astro Van (or similar) Hydroboost unit to a Tri5 in the stock brake master cylinder location. Complete hydroboost brake kits are fairly expensive, and you can build your own system for much less than a kit. A key component to the installation is an adapter that allows you to bolt the hydroboost unit to the firewall. Some clearancing of the firewall hole to accommodate the large nut is required. All other fabrication work such as linkage, hoses, etc. is the responsibility of the purchaser. All I'm selling is the adapter for mounting the hydroboost unit.

    I offer the adapter plate in two versions, both made of laser-cut 1/4" steel plate. They will fit any Tri5 Chevy car, and I understand there are other applications that use the same mounting pattern (58-64 Chevy?).

    The "standard" version is a bolt-in using the existing studs on the brake support that protrude through the firewall. You can orient the hydroboost such that the accumulator is opposite the engine for added clearance or at 180 degrees on the engine side if that's preferred for some reason. The upgraded "hidden bolt" version is "reversed" such that the four 3/8-24 NF grade 8 studs are welded into the adapter plate, and makes for a cleaner installation. You will have to remove the bolts from the stock brake assembly to use this upgraded adapter, but in my opinion it's worth the minimal effort. The orientation for the upgraded version is with the accumulator opposite the engine, as shown in the attached picture, but I can build them opposite by special order.

    The standard version is $29.95 and the "hidden bolt" version is $59.95 plus $5.75 shipping in the US lower 48.

    Attached are some pictures of the adapter plates, and one installation using the hidden bolt version.

    Email Lnobi53@yahoo.com if interested. I am also selling these on eBay.


    CLASSIC EDGE Designs, LLC
    Fort Collins, CO
    Attached Files
    Last edited by chevynut; 05-18-2015, 07:37 AM.
    56 Nomad, Ramjet 502, Viper 6-speed T56, C4 Corvette front and rear suspension


    Other vehicles:

    56 Chevy 2-door BelAir sedan
    56 Chevy 210 4-door sedan
    57 Chevy 210 4-door sedan
    1962 327/340HP Corvette
    1961 Willys CJ3B Jeep
    2001 Porsche Boxster S
    2003 Chevy Silverado 2500 HD Duramax
    2019 GMC Sierra Denali Duramax
  • 56-210Sedan
    Registered Member
    • Mar 2012
    • 837

    #2
    I really like the hidden bolt adapter plate, nice work.
    55 Belair 2dr Sedan 350/350 loving every minute of it.
    56-210 2dr Sedan c4 front/rear suspension, and not sure when the ride will roll.
    Marty

    http://www.picturetrail.com/56-210sedan

    http://saccc567.com/

    Comment

    • chevynut
      Registered Member
      • Nov 2011
      • 11015

      #3
      Thanks Marty. I'm trying to price the standard version competitively with some similar ones on the market for other vehicles. I know what it takes to make one by hand, because I made one myself.

      There's a lot more work to the hidden bolt version than meets the eye too. It's important that the bolts are very securely attached to the plate, and then they have to be ground flat for a smooth finish.
      56 Nomad, Ramjet 502, Viper 6-speed T56, C4 Corvette front and rear suspension


      Other vehicles:

      56 Chevy 2-door BelAir sedan
      56 Chevy 210 4-door sedan
      57 Chevy 210 4-door sedan
      1962 327/340HP Corvette
      1961 Willys CJ3B Jeep
      2001 Porsche Boxster S
      2003 Chevy Silverado 2500 HD Duramax
      2019 GMC Sierra Denali Duramax

      Comment

      • hep1966
        Registered Member
        • Oct 2012
        • 105

        #4
        I bought an Astro to get the engine for my truck. I was considering using the hydro system in my 56.
        John

        56 210
        66 Chevelle

        Comment

        • chevynut
          Registered Member
          • Nov 2011
          • 11015

          #5
          The plain adapters are ready to ship now, and the hidden stud adapters should be ready early next week. Ebay sales will likely cost more due to eBay fees and I will also charge for $5-6 shipping.
          56 Nomad, Ramjet 502, Viper 6-speed T56, C4 Corvette front and rear suspension


          Other vehicles:

          56 Chevy 2-door BelAir sedan
          56 Chevy 210 4-door sedan
          57 Chevy 210 4-door sedan
          1962 327/340HP Corvette
          1961 Willys CJ3B Jeep
          2001 Porsche Boxster S
          2003 Chevy Silverado 2500 HD Duramax
          2019 GMC Sierra Denali Duramax

          Comment

          • chevynut
            Registered Member
            • Nov 2011
            • 11015

            #6
            Both adapters are now available.
            56 Nomad, Ramjet 502, Viper 6-speed T56, C4 Corvette front and rear suspension


            Other vehicles:

            56 Chevy 2-door BelAir sedan
            56 Chevy 210 4-door sedan
            57 Chevy 210 4-door sedan
            1962 327/340HP Corvette
            1961 Willys CJ3B Jeep
            2001 Porsche Boxster S
            2003 Chevy Silverado 2500 HD Duramax
            2019 GMC Sierra Denali Duramax

            Comment

            • JT56
              Registered Member
              • Mar 2013
              • 1209

              #7
              CN, what is the total length from the firewall to the flange where the mc is bolted too? My current setup works, but sticks out too far for the ProCharger! Since I have 4 wheel discs Im hesitant to use manual brakes. I have heard good and bad with ABS. I believe their customer service sucks???
              My Album http://www.trifivechevys.com/album.php?albumid=39

              Comment

              • chevynut
                Registered Member
                • Nov 2011
                • 11015

                #8
                6 3/8" including the adapter.
                56 Nomad, Ramjet 502, Viper 6-speed T56, C4 Corvette front and rear suspension


                Other vehicles:

                56 Chevy 2-door BelAir sedan
                56 Chevy 210 4-door sedan
                57 Chevy 210 4-door sedan
                1962 327/340HP Corvette
                1961 Willys CJ3B Jeep
                2001 Porsche Boxster S
                2003 Chevy Silverado 2500 HD Duramax
                2019 GMC Sierra Denali Duramax

                Comment

                • 56-210Sedan
                  Registered Member
                  • Mar 2012
                  • 837

                  #9
                  Originally posted by JT56
                  CN, what is the total length from the firewall to the flange where the mc is bolted too? My current setup works, but sticks out too far for the ProCharger! Since I have 4 wheel discs Im hesitant to use manual brakes. I have heard good and bad with ABS. I believe their customer service sucks???
                  JT, i have not purchased form here http://www.hydratechbraking.com/Chev..._Fullsize.html but the service seems to be good, now with saying that i had a good conversation with the owner Jim and he took the time to discuss things with me and did not push his product on me.
                  55 Belair 2dr Sedan 350/350 loving every minute of it.
                  56-210 2dr Sedan c4 front/rear suspension, and not sure when the ride will roll.
                  Marty

                  http://www.picturetrail.com/56-210sedan

                  http://saccc567.com/

                  Comment

                  • JT56
                    Registered Member
                    • Mar 2013
                    • 1209

                    #10
                    Thanks for the replys. Im thinking with 4 wheel discs (cobra brakes rear, GM metric in front) having manual might be asking too much? I know I need to upgrade the fronts at some point. Want to stay with 15" since I will be running a drag radial on it in the rear.
                    My Album http://www.trifivechevys.com/album.php?albumid=39

                    Comment

                    • NickP
                      Registered Member
                      • Mar 2012
                      • 4158

                      #11
                      Can you offset the booster/MC?

                      Comment

                      • JT56
                        Registered Member
                        • Mar 2013
                        • 1209

                        #12
                        Originally posted by NCW
                        Can you offset the booster/MC?
                        I already have that on their. Blower isnt' here yet, but I did send my engine bay to ProCharger and they told me it wouldn't fit
                        My Album http://www.trifivechevys.com/album.php?albumid=39

                        Comment

                        • chevynut
                          Registered Member
                          • Nov 2011
                          • 11015

                          #13
                          JT, what is the maximum length you can live with from the firewall?
                          56 Nomad, Ramjet 502, Viper 6-speed T56, C4 Corvette front and rear suspension


                          Other vehicles:

                          56 Chevy 2-door BelAir sedan
                          56 Chevy 210 4-door sedan
                          57 Chevy 210 4-door sedan
                          1962 327/340HP Corvette
                          1961 Willys CJ3B Jeep
                          2001 Porsche Boxster S
                          2003 Chevy Silverado 2500 HD Duramax
                          2019 GMC Sierra Denali Duramax

                          Comment

                          • JT56
                            Registered Member
                            • Mar 2013
                            • 1209

                            #14
                            Originally posted by chevynut
                            JT, what is the maximum length you can live with from the firewall?
                            The current design drawings only show a front picture of this SC...I am asking for the design drawings showing how deep the SC is from its mounting surface. As soon as I get that I will know what I have to play with.
                            My Album http://www.trifivechevys.com/album.php?albumid=39

                            Comment

                            • JT56
                              Registered Member
                              • Mar 2013
                              • 1209

                              #15
                              CN about 14" from the firewall.
                              My Album http://www.trifivechevys.com/album.php?albumid=39

                              Comment

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