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#1 |
Everything is work in progress
![]() Join Date: Apr 2006
Location: Denver Colorado
Posts: 326
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Hydroboost & Hyd clutch what years??
I've converted my 80 K20 to a 5 speed (NV4500) and rear discs. I'm wanting to install hydroboost and hyd clutch. But I don't know what GM years would be compatible for a 4 disc brake system and the NV4500 with a drivers side external slave cylinder.
Any help would be fantastic.
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Good luck with your truck! How much?! It's just an old truck part!! 49 International on a 80 GMC 3/4ton 4x4 chassis 48 International KB-5 2 ton dump bed 04 Honda CRF "500" 09 Honda CRF450 fuel injected rocket 03 Suzuki hayabusa carbonfiber wheeled monster. 02 Ford diesel stretch van (toy hauler) 01 38' Monaco diesel pusher motorhome |
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#2 |
Registered User
![]() Join Date: May 2007
Location: Deale Md
Posts: 4,663
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Re: Hydroboost & Hyd clutch what years??
Late 80s trucks had hydraulic clutches, for the hydro boost brakes any one ton or diesel truck. you just to pay close attention because GM changed the fitting on the power steering from flare to o ring. Not sure on the best years.
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James 63 GMC V6 4speed carryall 65 chevy swb bbw V8 auto 68 K20 327/4 speed, buddy buckets 2002 GMC CC Dually Duramax 64 GMC lwb 3/4 V6 4speed SOLD 66 GMC swb bbw buddy buckets SOLD IG duallyjams The only thing that stays the same is constant change! |
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#3 |
Hollister Road Co.
Join Date: Apr 2005
Location: Houston
Posts: 6,134
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Re: Hydroboost & Hyd clutch what years??
Take a look at this it will give you the part numbers and where to get the fittings and hoses.
http://www.thehollisterroadcompany.com/hydroboost.html |
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#4 |
The Crazy Machanic
Join Date: Jan 2007
Location: Nokesville Va
Posts: 1,437
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Re: Hydroboost & Hyd clutch what years??
my old 83 one tone had hydrolic helped breaks. one were the power stearing also did breaks also had the hydrolic clutch it but so did my 86.
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*1986 Sliverado longbed 400 small block mean as hell, 700r4 trans (5 speed coming one day) ![]() * 1970 chevelle 2dr sedan Latest update June 24 2007. ![]() *1957 4 door stationwagon - pink all original needing a good restore (body great, floors bad) ![]() newest additions 1965 shortbed fleet great granddads. Been told im nuts to bring it back from the dead (still going to happen) plans-all stock with a turbo 292 inline 3 speed column shift. and thats it big block 427 and 5 speed trans and ford 9 inch theyhave no home yet thinking what to put them in and a 79 c60 trash truck um no idea i have one ![]() |
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#5 |
Registered User
Join Date: Mar 2006
Location: Kansas
Posts: 865
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Re: Hydroboost & Hyd clutch what years??
I used to have a 79 1 ton with the brakes, and I currently have a 77, 89, and 04 1 ton crew cabs with the hydroboost. The 04 is 4 wheel disk brakes but you don't want to use the booster from it. Gm made the relief valve hole too big, and the spring weak, so it blows off the pressure too easy. Strange enough none of my standard tranny trucks have had the hyd clutch except the 60 1 ton.
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#6 |
Registered User
Join Date: Sep 2006
Location: colorado springs colorado
Posts: 737
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Re: Hydroboost & Hyd clutch what years??
I'm using the hydro boost out of an 84 1ton moving van that has the flare fittings. I believe that a proportioning valve is still required for 4 wheel disks though. The hydro sytem was given to me so I haven't done alot of research on it yet. The fluid pressure just replaces the vacuum pressure so I don't see why a proportioning valve wouldn't be needed.
Frank
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70 chevy lwb c10 454/th400 and a 9" rearend suicide doors, marker light fuel fill, 4" cowl , mini tub |
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#7 |
Registered User
![]() Join Date: May 2007
Location: Deale Md
Posts: 4,663
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Re: Hydroboost & Hyd clutch what years??
I just went by the local bone yard and I found a diesel blazer that still had the hydroboast brake on it but the pump was gone. Just shake some bushes and you can find what you need.
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James 63 GMC V6 4speed carryall 65 chevy swb bbw V8 auto 68 K20 327/4 speed, buddy buckets 2002 GMC CC Dually Duramax 64 GMC lwb 3/4 V6 4speed SOLD 66 GMC swb bbw buddy buckets SOLD IG duallyjams The only thing that stays the same is constant change! |
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#8 |
Registered User
Join Date: Feb 2007
Location: Austin, TX
Posts: 3,930
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Re: Hydroboost & Hyd clutch what years??
Wasn't it 85 when they started using hydraulic clutches and slave cylinders ? I'm just shooting a number here, I don't know the exact year.
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#9 |
Senior Member
Join Date: Jul 2003
Location: Indianapolis, IN
Posts: 1,277
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Re: Hydroboost & Hyd clutch what years??
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#10 |
Everything is work in progress
![]() Join Date: Apr 2006
Location: Denver Colorado
Posts: 326
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Re: Hydroboost & Hyd clutch what years??
Because I have 4 disc's can I change to different master cylinders? Say I have a hydroboost from a disc/drum donor, can I buy a disc/disc mc that fits the booster and stop happily ever after?
Does the flare fittings also apply to the steering box or just the pump? And DWCSR thanks for the link great info.
__________________
Good luck with your truck! How much?! It's just an old truck part!! 49 International on a 80 GMC 3/4ton 4x4 chassis 48 International KB-5 2 ton dump bed 04 Honda CRF "500" 09 Honda CRF450 fuel injected rocket 03 Suzuki hayabusa carbonfiber wheeled monster. 02 Ford diesel stretch van (toy hauler) 01 38' Monaco diesel pusher motorhome Last edited by cobinder; 11-27-2007 at 10:26 AM. |
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