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Power brake options??? #2968337
09/29/21 08:23 AM
09/29/21 08:23 AM
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Weatherford, Texas
RapidusMaximus Offline OP
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RapidusMaximus  Offline OP
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So….I’m in the middle of building a 76 SWB big block truck and I want to install the power brake system before I put the dash back in…not so fast there big boy…vacuum boosters are currently made out of unobtainium. Looks like the current best option is to send this one in for rebuild….is there another option, aftermarket maybe, like wilwood or??? Thanks…

Last edited by RapidusMaximus; 09/29/21 11:23 AM.

1968 Plymouth GTX 440 4 Speed Dana
1967 Dart 408 Magnum 7.0 index car ***for sale***
1974 Dodge P/U Long Bed Stepside 318 Auto
1970 Cuda 5.80 index and bracket car
2019 Ram 2500 6.4, auto, 4WD
Re: Power brake options??? [Re: RapidusMaximus] #2968374
09/29/21 09:59 AM
09/29/21 09:59 AM
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Fort Worth, Texas
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Hydroboost conversion is what I had in mind when the time came.

https://www.powerbrakeservice.net/new-1967-1988-dodge-truck-d100-w100-hydroboost-brake-booster.html

Pretty sure GJ has done a similar conversion with factory parts and probably cheaper then the $450 pbs wants?


'68 Fury Convertible
'69 300 Convertible
'93 Ramcharger 5.7 Hemi
'93 Ramcharger 318 sold
'01 3500 4x4 Cummins 6 speed sold RIP bawling
'13 300 S sold
'15 Durango 5.7 Hemi
'16 300 S Hemi
Re: Power brake options??? [Re: 3hundred] #2968399
09/29/21 11:40 AM
09/29/21 11:40 AM
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Weatherford, Texas
RapidusMaximus Offline OP
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RapidusMaximus  Offline OP
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Weatherford, Texas
Originally Posted by 3hundred
Hydroboost conversion is what I had in mind when the time came.

https://www.powerbrakeservice.net/new-1967-1988-dodge-truck-d100-w100-hydroboost-brake-booster.html

Pretty sure GJ has done a similar conversion with factory parts and probably cheaper then the $450 pbs wants?

Ouch, thanks for the info, but that’s 840 dollars after you add the correct m/c and required hoses… eek


1968 Plymouth GTX 440 4 Speed Dana
1967 Dart 408 Magnum 7.0 index car ***for sale***
1974 Dodge P/U Long Bed Stepside 318 Auto
1970 Cuda 5.80 index and bracket car
2019 Ram 2500 6.4, auto, 4WD
Re: Power brake options??? [Re: RapidusMaximus] #2968411
09/29/21 11:59 AM
09/29/21 11:59 AM
Joined: Nov 2003
Posts: 9,075
Fort Worth, Texas
3hundred Online work
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Originally Posted by RapidusMaximus
Originally Posted by 3hundred
Hydroboost conversion is what I had in mind when the time came.

https://www.powerbrakeservice.net/new-1967-1988-dodge-truck-d100-w100-hydroboost-brake-booster.html

Pretty sure GJ has done a similar conversion with factory parts and probably cheaper then the $450 pbs wants?

Ouch, thanks for the info, but that’s 840 dollars after you add the correct m/c and required hoses… eek


I know, cost rarely deters me. That's why I suggested asking Guitar Jones about his conversion.


'68 Fury Convertible
'69 300 Convertible
'93 Ramcharger 5.7 Hemi
'93 Ramcharger 318 sold
'01 3500 4x4 Cummins 6 speed sold RIP bawling
'13 300 S sold
'15 Durango 5.7 Hemi
'16 300 S Hemi
Re: Power brake options??? [Re: RapidusMaximus] #2968622
09/29/21 09:29 PM
09/29/21 09:29 PM
Joined: Dec 2012
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Alberta
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440_Offroader Offline
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I put a hydroboost off a 2002 2500 Cummins, onto my 79' project with a 440. The two holes on the right fit in the factory booster bolt holes. The other 2 on the left I had to drill through the firewall. The brake pedal hooked right up. I did have to make a thin plate that fit between the hydroboost and the firewall. It pretty much covered up the 2 unused bolt holes from the original booster. You do need adapters in the hydroboost master cylinder, to go from metric to SAE.
I haven't got it all hooked up yet though. Still need to get hoses made, but I bought the hydroboost for $20, and $13 for the fitting adapters. I can't imagine the hoses being too bad for price.

Re: Power brake options??? [Re: 440_Offroader] #2968627
09/29/21 09:38 PM
09/29/21 09:38 PM
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Alberta
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440_Offroader Offline
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On another note, I did put a 3/4 ton small diameter, double diaphragm booster on a Ramcharger years ago. Not sure if those are just as hard to find? I guess you might need one of them anyway, if your installing a RB engine, just for clearance to the valve cover. That is, if you don't go the hydroboost route.

Re: Power brake options??? [Re: 440_Offroader] #2968699
09/30/21 09:49 AM
09/30/21 09:49 AM
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Perkiomenville PA
RWG75 Offline
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Ya absolutely need the small diameter booster to clear 440 valve covers if you ever expect to remove them. Might be able to shoe horn it past the larger one but I doubt it and will be almost zero clearance. Swapping the 3/4 ton dual diaphragm has been the ticket for years. Ya might also look at 70s C-bodies as they ran dual diaphragms too. They should all be 4 bolt masters and not sure about the firewall bolt pattern. As far as getting one remanned, last I knew the only place for that was carid and quality was suspect at best.

00j0j_enIo0CpNZpy_600x450.jpg77_400_2wd_1.jpg

75 Charger SE - 440/4, cop suspension
76 Daytona - survivor
76 Daytona - tweaked
77 PW - macho clone, sno-commander, frankenram
79 RC - this was your fathers 4x4
79 LRE - More fun than it looks
Re: Power brake options??? [Re: 3hundred] #2968891
09/30/21 08:08 PM
09/30/21 08:08 PM
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in a cattle trailer down by th...
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Guitar Jones Online laugh2
Paddle faster! I hear banjo music!
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in a cattle trailer down by th...
Like 440 offroader I used a HB off a 2000 Cummins truck, but since mine is a diesel I couldn't use it as is because it's too long and hit the intake elbow. I made a flat plate to mount the unit to the firewall and shortened the pushrod. I used hoses and master cylinder from the 2000 truck as well as the power steering pump to get the two return nipples. You can just tee off the single though. Now I guess the ticket is to get the entire assembly off 2500 GM van, (a "G" I think) that already has the flat plate and is supposed to bolt directly to the firewall but the pushrod eye is different. This unit clocks the HB and master cylinder differently and probably needs custom hoses. Both will need M/C to proportioning valve lines made.
You can buy a reseal kit for the HB off ebay, they all take the same kit. You need a special tool to remove the pushrod though if you plan to change that. The big nut that holds the HB unit to the bracket is 1 7/8" I believe, but don't quote me on that.


I raise chickens, so I am literally a chicken tender.

The Scamp is sold, now just two old trucks and one newer one.
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
Re: Power brake options??? [Re: Guitar Jones] #2968914
09/30/21 09:00 PM
09/30/21 09:00 PM
Joined: Nov 2003
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Western Colorado High Desert
moparmarks Offline
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Western Colorado High Desert
Here is the clearance with a 440 and the big booster. Not much space there.

20160126_180708.jpg

72 Satellite Sebring Plus 440, 72 Dart 5.9 4-spd, 68 Valiant, 73 W200, 78 D100 sb, 78 D200, 98 DAKOTA, .
Moparmarks Parts & Restorations
Desert Mopar Metal
Grand Jct. CO
970-261-7039
http://moparmark.com/
motormangj@gmail.com
Re: Power brake options??? [Re: moparmarks] #2969517
10/02/21 07:34 AM
10/02/21 07:34 AM
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ohio
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ruderunner Online content
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Quick correction to GJ about the return line, DO NOT T them together, both need to run to the reservoir.

A single line can't flow enough and leads to funky problems with things like self activation of the brakes.

Also, 2 bolt dual boosters are available, 85 W250 is one application. Might depend on gvw.

Last edited by ruderunner; 10/02/21 07:35 AM.

Angry white guy
Re: Power brake options??? [Re: ruderunner] #2969524
10/02/21 08:18 AM
10/02/21 08:18 AM
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in a cattle trailer down by th...
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Guitar Jones Online laugh2
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Originally Posted by ruderunner
Quick correction to GJ about the return line, DO NOT T them together, both need to run to the reservoir.

A single line can't flow enough and leads to funky problems with things like self activation of the brakes.

Also, 2 bolt dual boosters are available, 85 W250 is one application. Might depend on gvw.

Many of the kits use this method as does the one posted earlier in the thread. I didn't do it on mine though. Plenty of guys on the 1st gen forums have done the same and I haven't seen any reported problems so it's news to me. shruggy


I raise chickens, so I am literally a chicken tender.

The Scamp is sold, now just two old trucks and one newer one.
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
Re: Power brake options??? [Re: Guitar Jones] #2970005
10/03/21 03:01 PM
10/03/21 03:01 PM
Joined: Dec 2014
Posts: 4,307
ohio
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ruderunner Online content
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On an IH forum I'm on, people do quite a few Hydroboost swaps. Some have had problems with T fittings.

Think about this, most, maybe all, OEM applications have separate returns requiring tooling for different reservoirs. If a T was adequate they would do that instead.

Personally I'm not a fan of Hydroboost. Don't care for the pedal feel and Ford systems are awful. You lose power steering assist if you're on the brakes hard.


Angry white guy
Re: Power brake options??? [Re: ruderunner] #2970110
10/03/21 09:48 PM
10/03/21 09:48 PM
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in a cattle trailer down by th...
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Guitar Jones Online laugh2
Paddle faster! I hear banjo music!
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in a cattle trailer down by th...
Oh I get it and that is why I used a hydro power steering pump on mine, I just never heard of problems with the T.
I love my hydroboost, the brakes have never worked so well on my truck. I may do the crew cab in the future too.


I raise chickens, so I am literally a chicken tender.

The Scamp is sold, now just two old trucks and one newer one.
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
Re: Power brake options??? [Re: Guitar Jones] #2970347
10/04/21 12:59 PM
10/04/21 12:59 PM
Joined: May 2003
Posts: 6,333
Downtown Roebuck Ont
Twostick Offline
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Booster Dewey has an excellent reputation.

https://boosterdeweyexchange.com/

Kevin

Re: Power brake options??? [Re: Twostick] #2970724
10/05/21 05:00 AM
10/05/21 05:00 AM
Joined: Jun 2003
Posts: 2,333
Weatherford, Texas
RapidusMaximus Offline OP
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Originally Posted by Twostick
Booster Dewey has an excellent reputation.

https://boosterdeweyexchange.com/

Kevin

Thanks, I’ll probably give these guys a call today up


1968 Plymouth GTX 440 4 Speed Dana
1967 Dart 408 Magnum 7.0 index car ***for sale***
1974 Dodge P/U Long Bed Stepside 318 Auto
1970 Cuda 5.80 index and bracket car
2019 Ram 2500 6.4, auto, 4WD
Re: Power brake options??? [Re: RapidusMaximus] #2970936
10/05/21 01:48 PM
10/05/21 01:48 PM
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ILLINOIS
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volaredon Offline
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Yeah I looked into him but seems crazy high. Have another place closer I'm waiting for a response quote from.







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