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Hydroboost Install... finally an easy modification

Discussion in 'The Garage' started by camiswelding, Jul 4, 2003.

  1. camiswelding

    camiswelding 1/2 ton status

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    Redding, CA
    Installed the hydroboost from my 85 K30 military donor truck onto my 81 K5...
    Totally bolt on.. everything fit,, the linkage was even the same length ( 7.5 inches)
    I already had a hi pressure pump and just had to add a fitting...
    finally a mod that was easy.. took about 60 minutes being very careful
    Momma says it doesnt matter how fast it can go but stopping is real important
    Soooooooo if any of you wrenches have a question..
    I just did it
    cam /forums/images/graemlins/grin.gif
     
  2. Zeus33rd

    Zeus33rd Smarter than you GMOTM Winner

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    How well does it work? How much of an improvement did you see?
     
  3. camiswelding

    camiswelding 1/2 ton status

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    and the answer is....
    I dont know yet.. the driveshafts still have to be made,,,
    but
    everything I read says this is one of the best brake things we can do to 60/14bff trucks... should be like the k30 originally was as all the stuff is now there
    Ill update it after a long test drive
     
  4. camiswelding

    camiswelding 1/2 ton status

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    UPDATE #1
    I had to upgrade the 81K5 power steering pump to an 89 1 ton with hydroboost....
    It is higher pressure (earlier non hydro pumps are 400 psi less in pressure) and has a much larger reservoir...
    my earlier "superpump" would have worked but I didnt feel like welding another return fitting on it...
    my motto keep the simple things stock and spend your time on fabricating the hard stuff....
    cam
     
  5. Seventy4Blazer

    Seventy4Blazer 3/4 ton status

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    Escondido, CA
    got a part number for the slace cylander?
    i need a new one and the counter guys keep bringn me one that looks way backwards of the one i got.
    thanks.
    Grant
     
  6. camiswelding

    camiswelding 1/2 ton status

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    Ill check and see what numbers if any are on mine... if I dont post by tonight (Sunday) youll know I couldnt find one on it...
    UPDATE #2
    My power steering bracket needed modification to fit the hydro pump which is a third larger.. so today is fab power steering braket day. Also I had to swap pullys with the diesel one.. which gets you close to lining up to the older blazer stuff... shim shim shim... and it will work
    Id post pics but someone is going to have to tell me how to do that... wrenching Im good at .. but Im part of the generation that missed computers
    cam
     

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