Hydroboost - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1-PU70 · 11-21-2009, 07:51 PM

Are there any posts of a hydroboost conversion using junk yard parts like doner vehicles and install mods. I did a search and searched the google and came up blank. I think it would be a good up grade for my towing.

eric67m · 11-21-2009, 08:34 PM

I would be interested in this info also. I posted a "who is running hydroboost" on the 4x4 page. I think It sounds like a good upgrade and will be saving my pennies and dimes to do it some day.

greens69 · 11-21-2009, 08:51 PM

I just put a hydroboost system on my 59 Wagon and I used a hydroboost from the auto parts from a 95 Astro Van, and I found the rest of the parts needed from TallonHydraulics.com for the hose kit,spring,rod and retainer and all the fittings. The outcome was great and I am really happy I went this route.

100%Chevy · 11-21-2009, 08:58 PM

I have hydroboost on my 87,G-30 motorhome and my 95,K-3500.
Also just pulled a unit from a 89 motorhome.
Why do people want to use this brake system on their vehicles?
Surely it's only better on heavier vehicles.But why use it on light duty stuff?
Mike.

greens69 · 11-21-2009, 09:04 PM

The reason I went with it on my wagon was the for the space, it had 7" booster and the brakes were terrible.... and I couldn't go bigger with the big block for clearance issues, so went this way and I couldn't be happier.

dwcsr · 11-21-2009, 09:05 PM

This will get you some basics
http://www.thehollisterroadcompany.com/hydroboost.html
search this site for one done on a early 70's truck

mosesburb · 11-22-2009, 02:36 AM

I did one on my '72 Suburban. The nuts and bolts of the swap are fairly easy/straightforward, but the hoses can be a hoot. I like the mounting plate from the 88-99 C/K trucks because it is very easy to adapt and very clean looking when finished.

If you are super bored there is a link in my sig to the whole thread, but if you would rather spend your time more productively, this is a link to the post in the thread regarding the hydroboost unit.

eric67m · 11-22-2009, 10:21 AM

4x4 guys use them because larger tires with stock brakes are not as powerful as necessary.

What years used them. I know diesels did, but it seems like they were used from the 70's-2000's. I know mainly the heavier duty rigs but it also sounds like some 1/2 tons and vans used it.

Wrenchbender Ret · 11-22-2009, 11:43 AM

Practically every Chev/GMC 1 ton truck from 74 up had it.

powerdriver 1958 · 11-22-2009, 12:25 PM

Quote:

Originally Posted by 100%Chevy

Surely it's only better on heavier vehicles.But why use it on light duty stuff?

Also helps if you are running BIG camshafts,No low vacuum problems.Early diesel pickups that the company I work for had hydro boost (1/2 tons)

BigChevy80 · 11-22-2009, 02:30 PM

Any GM vehicle from the 70's and 80's with a diesel had hydroboost. Also some of the bigger GM station wagons used them. Once you drive a vehicle with hydroboost, you will know why people like them...

jeffspower · 11-22-2009, 02:45 PM

Here's the 3 different "pump to Hydroboost" hoses I came up with just on the '78 "C" series. I'm sure if we looked at the G30 van, P30, diesel cars, etc. we would find more.

jeffspower · 11-22-2009, 02:48 PM

And the "Hydroboost to steering gear" that fit all 3 applications

jeffspower · 11-22-2009, 03:02 PM

While I'm at it, might as well keep going

'79 Olds 98 diesel. No measurement available on the pump hose.

jeffspower · 11-22-2009, 03:10 PM

'79 P30 with a 350 gas. Pump, then gear:

BigChevy80 · 11-22-2009, 04:13 PM

Alot of machine shops and old style service stations can custom make hydraulic hoses. If you can find one that has the right fittings, you can get them custom made. I had some power steering lines made this way a few years ago.

wildwilly4x4 · 11-22-2009, 04:58 PM

On my 72 I mounted a hydroboost since I am running a 6.5 diesel. Line the 80's bracket up with the middle two holes in the bracket to the two studs right next to the hole in your firewall. Mark the top mounting studs location on the bracket and drill the new top new stud holes in the bracket (7/17 IIRC). Then you will need to trim the top and bottom of the bracket to make it fit correctly. You may have to lengthen the brake pedal pushrod as well, I had to anyways. This is a very easy mod, but as previosly stated you will either need hose adapters, custom hoses, or do as I did and use the stock hoses. You can change the power steering pump's discharge fitting to the later O-ring style, and then use a late 70's-80's steering box. Somtimes that route may be cheaper if you have some decent wrecking yards or buddys around. Good luck!

bugmasta · 05-08-2013, 12:01 PM

Subscribed.
Posted via Mobile Device

Rusty69 · 06-26-2013, 12:25 AM

Which hydroboost unit is easiest to mount to a 69 firewall? I'm trying to go all metric fittings. I've seen some guys say a 95 Astros and others say a 99 c3500. Just curious which stock mounting bracket takes the least massaging to make fit. My buddy works at the industrial John Deere shop, so luckily hoses are the least of my worries. Any info would be great.
Posted via Mobile Device

Murphy IRE · 06-27-2013, 10:59 PM

I put in a Hydro boost from ABS in Orange Cal. It was one of the easier thingsI've done. Two small modifications on the return line and that was it.
The thread was "Wow after everything, I finally have brakes. i couldn't find one used and in the mountains, i went with new.

67_C-30 · 06-28-2013, 01:21 AM

I put Hydroboost on my '67 C-30 diesel dually. I had too notch the mounting plate and extend the rod, but it was very straight forward. I used the steering box out the truck that hydroboost unit came from, so I had line fitment issues. Here's the few pics I have of it.

http://67-72chevytrucks.com/vboard/s...254096&page=12

allons · 06-28-2013, 07:21 PM

I'm planning on using the hydroboost system on the build of my '72 C10. Also, I'm planning on running the HB for the brakes AND the power steering. The difference is the plan is to run a Mercedes Benz electric hydraulic pump to feed both the brakes and the steering thereby freeing up some HP that would have been used to drive the hydraulic pump. At least that's the plan!

Sign me up for this thread!

HarleyT · 06-28-2013, 10:32 PM

I'm in the process of doing this right now,ill get a list of parts I used and post them next week . I am currently waiting on the hydro boost fittings to convert to -6 lines
Posted via Mobile Device
Posted via Mobile Device

allons · 06-29-2013, 07:59 AM

Quote:

Originally Posted by HarleyT

I'm in the process of doing this right now,ill get a list of parts I used and post them next week . I am currently waiting on the hydro boost fittings to convert to -6 lines
Posted via Mobile Device
Posted via Mobile Device

That sounds nice. . . . please keep us informed!

davidfre21 · 06-29-2013, 08:56 AM

When I did my conversation on my s10 I just had all new hydraulic lines made. Was way simple and cheap. And for the people sourcing through junk yards for boosters. A reman unit isn't a whole lot more price wise. But does typically come with that coveted warenty. My jimmys conversion is on my things to do list
Posted via Mobile Device

11-21-2009, 07:51 PM	#1
1-PU70 Registered User Join Date: Apr 2000 Location: Bradenton, FL Posts: 1,036	Hydroboost Are there any posts of a hydroboost conversion using junk yard parts like doner vehicles and install mods. I did a search and searched the google and came up blank. I think it would be a good up grade for my towing. __________________ 1970 CST/10 402,700R4,3:73 posi,AC,PS,PB,TLT,PW,Buckets with heaters

11-21-2009, 08:34 PM	#2
eric67m Registered User Join Date: Apr 2005 Location: Monroe, WA Posts: 298	Re: Hydroboost I would be interested in this info also. I posted a "who is running hydroboost" on the 4x4 page. I think It sounds like a good upgrade and will be saving my pennies and dimes to do it some day. __________________ 67 K10, lwb, fleetside, 327, 4spd, 205, cab and 3/4 frame swap, 14 bolt, big window, and a "rustoleum roll job"

11-21-2009, 08:51 PM	#3
greens69 Registered User Join Date: Oct 2000 Location: Tomball,Texas USA Posts: 324	Re: Hydroboost I just put a hydroboost system on my 59 Wagon and I used a hydroboost from the auto parts from a 95 Astro Van, and I found the rest of the parts needed from TallonHydraulics.com for the hose kit,spring,rod and retainer and all the fittings. The outcome was great and I am really happy I went this route. __________________ Houston and Dallas Autorama Show Chairman ///Relaxed Atmosphere 1969 Chevrolet C10 1972 Chevrolet 2WD Blazer 1987 GMC Sierra

11-21-2009, 08:58 PM	#4
100%Chevy Registered User Join Date: Jun 2008 Location: Moss Point,Ms. Posts: 1,439	Re: Hydroboost I have hydroboost on my 87,G-30 motorhome and my 95,K-3500. Also just pulled a unit from a 89 motorhome. Why do people want to use this brake system on their vehicles? Surely it's only better on heavier vehicles.But why use it on light duty stuff? Mike.

11-21-2009, 09:04 PM	#5
greens69 Registered User Join Date: Oct 2000 Location: Tomball,Texas USA Posts: 324	Re: Hydroboost The reason I went with it on my wagon was the for the space, it had 7" booster and the brakes were terrible.... and I couldn't go bigger with the big block for clearance issues, so went this way and I couldn't be happier. __________________ Houston and Dallas Autorama Show Chairman ///Relaxed Atmosphere 1969 Chevrolet C10 1972 Chevrolet 2WD Blazer 1987 GMC Sierra

11-21-2009, 09:05 PM	#6
dwcsr Hollister Road Co. Join Date: Apr 2005 Location: Houston Posts: 6,131	Re: Hydroboost This will get you some basics http://www.thehollisterroadcompany.com/hydroboost.html search this site for one done on a early 70's truck

11-22-2009, 02:36 AM	#7
mosesburb I had a V-8 Join Date: May 2003 Location: Phoenix AZ Posts: 1,116	Re: Hydroboost I did one on my '72 Suburban. The nuts and bolts of the swap are fairly easy/straightforward, but the hoses can be a hoot. I like the mounting plate from the 88-99 C/K trucks because it is very easy to adapt and very clean looking when finished. If you are super bored there is a link in my sig to the whole thread, but if you would rather spend your time more productively, this is a link to the post in the thread regarding the hydroboost unit. __________________ 1972 K20 Suburban, 5.9L Cummins, Banks Power Pack, NV4500HD, NP205, H.A.D., D60/14FF ARB Link To Build: HERE.

11-22-2009, 10:21 AM	#8
eric67m Registered User Join Date: Apr 2005 Location: Monroe, WA Posts: 298	Re: Hydroboost 4x4 guys use them because larger tires with stock brakes are not as powerful as necessary. What years used them. I know diesels did, but it seems like they were used from the 70's-2000's. I know mainly the heavier duty rigs but it also sounds like some 1/2 tons and vans used it. __________________ 67 K10, lwb, fleetside, 327, 4spd, 205, cab and 3/4 frame swap, 14 bolt, big window, and a "rustoleum roll job"

11-22-2009, 11:43 AM	#9
Wrenchbender Ret Registered User Join Date: Oct 2005 Location: Overland Park, Ks. Posts: 5,229	Re: Hydroboost Practically every Chev/GMC 1 ton truck from 74 up had it.

11-22-2009, 02:30 PM	#11
BigChevy80 Registered User Join Date: Nov 2009 Location: Bloomington, IL Posts: 34	Re: Hydroboost Any GM vehicle from the 70's and 80's with a diesel had hydroboost. Also some of the bigger GM station wagons used them. Once you drive a vehicle with hydroboost, you will know why people like them... __________________ -Tony Money is no object... once it's in your wife's hands. 1972 GMC Sierra 1977 Ford LTD II 2000 Pontiac Grand Prix (wife's ride)

11-22-2009, 02:45 PM	#12
jeffspower Well, Whoop-dee-do! Join Date: Mar 2003 Location: Easton, Mo. pop.- me & scarcely a few others Posts: 2,302	Re: Hydroboost Here's the 3 different "pump to Hydroboost" hoses I came up with just on the '78 "C" series. I'm sure if we looked at the G30 van, P30, diesel cars, etc. we would find more. Attached Images __________________ '68 GMC shortbox 4x4 350/SM465/T221- bought it in '83 SOLD '72 K20 500 Cad/TH400/NP205 SOLD '92 Chevy 2500 6.5 mech TD 4L80E crusty daily driver '72 Monte Carlo... sweet low mile toy '11 Dodge Challenger IE 392 6spd... midlife car Last edited by jeffspower; 11-22-2009 at 02:47 PM. Reason: duhht OHH

11-22-2009, 02:48 PM	#13
jeffspower Well, Whoop-dee-do! Join Date: Mar 2003 Location: Easton, Mo. pop.- me & scarcely a few others Posts: 2,302	Re: Hydroboost And the "Hydroboost to steering gear" that fit all 3 applications Attached Images __________________ '68 GMC shortbox 4x4 350/SM465/T221- bought it in '83 SOLD '72 K20 500 Cad/TH400/NP205 SOLD '92 Chevy 2500 6.5 mech TD 4L80E crusty daily driver '72 Monte Carlo... sweet low mile toy '11 Dodge Challenger IE 392 6spd... midlife car

11-22-2009, 03:02 PM	#14
jeffspower Well, Whoop-dee-do! Join Date: Mar 2003 Location: Easton, Mo. pop.- me & scarcely a few others Posts: 2,302	Re: Hydroboost While I'm at it, might as well keep going '79 Olds 98 diesel. No measurement available on the pump hose. Attached Images __________________ '68 GMC shortbox 4x4 350/SM465/T221- bought it in '83 SOLD '72 K20 500 Cad/TH400/NP205 SOLD '92 Chevy 2500 6.5 mech TD 4L80E crusty daily driver '72 Monte Carlo... sweet low mile toy '11 Dodge Challenger IE 392 6spd... midlife car

11-22-2009, 03:10 PM	#15
jeffspower Well, Whoop-dee-do! Join Date: Mar 2003 Location: Easton, Mo. pop.- me & scarcely a few others Posts: 2,302	Re: Hydroboost '79 P30 with a 350 gas. Pump, then gear: Attached Images __________________ '68 GMC shortbox 4x4 350/SM465/T221- bought it in '83 SOLD '72 K20 500 Cad/TH400/NP205 SOLD '92 Chevy 2500 6.5 mech TD 4L80E crusty daily driver '72 Monte Carlo... sweet low mile toy '11 Dodge Challenger IE 392 6spd... midlife car

11-22-2009, 04:13 PM	#16
BigChevy80 Registered User Join Date: Nov 2009 Location: Bloomington, IL Posts: 34	Re: Hydroboost Alot of machine shops and old style service stations can custom make hydraulic hoses. If you can find one that has the right fittings, you can get them custom made. I had some power steering lines made this way a few years ago. __________________ -Tony Money is no object... once it's in your wife's hands. 1972 GMC Sierra 1977 Ford LTD II 2000 Pontiac Grand Prix (wife's ride)



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11-22-2009, 04:58 PM	#17
wildwilly4x4 Registered User Join Date: Aug 2009 Location: Sunray,TX Posts: 251	Re: Hydroboost On my 72 I mounted a hydroboost since I am running a 6.5 diesel. Line the 80's bracket up with the middle two holes in the bracket to the two studs right next to the hole in your firewall. Mark the top mounting studs location on the bracket and drill the new top new stud holes in the bracket (7/17 IIRC). Then you will need to trim the top and bottom of the bracket to make it fit correctly. You may have to lengthen the brake pedal pushrod as well, I had to anyways. This is a very easy mod, but as previosly stated you will either need hose adapters, custom hoses, or do as I did and use the stock hoses. You can change the power steering pump's discharge fitting to the later O-ring style, and then use a late 70's-80's steering box. Somtimes that route may be cheaper if you have some decent wrecking yards or buddys around. Good luck!

05-08-2013, 12:01 PM	#18
bugmasta Registered User Join Date: Aug 2009 Location: North Bend, WA Posts: 272	Re: Hydroboost Subscribed. Posted via Mobile Device __________________ 68 c20 build: http://67-72chevytrucks.com/vboard/s...d.php?t=358130 Club longbed ...cause girls like'em long!!!!!

06-26-2013, 12:25 AM	#19
Rusty69 Registered User Join Date: Jun 2013 Location: Wetumpka, al Posts: 76	Re: Hydroboost Which hydroboost unit is easiest to mount to a 69 firewall? I'm trying to go all metric fittings. I've seen some guys say a 95 Astros and others say a 99 c3500. Just curious which stock mounting bracket takes the least massaging to make fit. My buddy works at the industrial John Deere shop, so luckily hoses are the least of my worries. Any info would be great. Posted via Mobile Device

06-27-2013, 10:59 PM	#20
Murphy IRE Registered User Join Date: Oct 2009 Location: South Denver Metro, CO Posts: 385	Re: Hydroboost I put in a Hydro boost from ABS in Orange Cal. It was one of the easier thingsI've done. Two small modifications on the return line and that was it. The thread was "Wow after everything, I finally have brakes. i couldn't find one used and in the mountains, i went with new.

06-28-2013, 01:21 AM	#21
67_C-30 I have a radical idea! Join Date: Jan 2005 Location: Sweet Home Alabama! Posts: 6,513	Re: Hydroboost I put Hydroboost on my '67 C-30 diesel dually. I had too notch the mounting plate and extend the rod, but it was very straight forward. I used the steering box out the truck that hydroboost unit came from, so I had line fitment issues. Here's the few pics I have of it. http://67-72chevytrucks.com/vboard/s...254096&page=12 __________________ '67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club!

06-28-2013, 07:21 PM	#22
allons Registered User Join Date: Apr 2013 Location: West Liberty, Ohio Posts: 288	Re: Hydroboost I'm planning on using the hydroboost system on the build of my '72 C10. Also, I'm planning on running the HB for the brakes AND the power steering. The difference is the plan is to run a Mercedes Benz electric hydraulic pump to feed both the brakes and the steering thereby freeing up some HP that would have been used to drive the hydraulic pump. At least that's the plan! Sign me up for this thread!

06-28-2013, 10:32 PM	#23
HarleyT Registered User Join Date: Dec 2007 Location: Memphis,Tn. Posts: 145	Re: Hydroboost I'm in the process of doing this right now,ill get a list of parts I used and post them next week . I am currently waiting on the hydro boost fittings to convert to -6 lines Posted via Mobile Device Posted via Mobile Device

06-29-2013, 08:56 AM	#25
davidfre21 Registered User Join Date: May 2013 Location: odessa,tx Posts: 72	Re: Hydroboost When I did my conversation on my s10 I just had all new hydraulic lines made. Was way simple and cheap. And for the people sourcing through junk yards for boosters. A reman unit isn't a whole lot more price wise. But does typically come with that coveted warenty. My jimmys conversion is on my things to do list Posted via Mobile Device

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