1500 Hydroboost Conversion Part Numbers

[toomanyhobbies]

Hi,

I am in the middle of restoring a '98 2-door LT and I after doing a lot of research, I ordered parts for the hydro boost conversion, primarily using information I found here. However, some of the information in this thread is dated and incomplete and I am now somewhat stuck.

Main problem is the brake pedal. The LMC pedal in post #1 is NLA and I have ordered the following GM part number pedals, neither of which work.

15906966 (the pedal that came was for a manual truck and doesn't fit)
15906961 (doesn't fit)

I am now looking at drilling the hole higher on the existing pedal as there is some information online about the measurements. But if anyone has a part number for a pedal that fits it would be appreciated.

Second problem is the hydro boost output rod, and spring/retainer assembly. I found out the hard way that this does not come with the rebuilt units. I ordered a 52-7358 hydro boost and a 10-2754 master. After a lot of searching, I found this site where I can get the parts, http://www.tallonhydraulics.com/store/index.php?main_page=index&cPath=40_16 but after a call there I found out there is no "standard" length of rod and I will likely need to order more than one and cut to fit. Since most of the conversions that are written about include hydro units from a wrecker, this fact was not mentioned in the research I did.

Thanks for your help.

 

[Cokeman95]

Hi,

I am in the middle of restoring a '98 2-door LT and I after doing a lot of research, I ordered parts for the hydro boost conversion, primarily using information I found here. However, some of the information in this thread is dated and incomplete and I am now somewhat stuck.

Main problem is the brake pedal. The LMC pedal in post #1 is NLA and I have ordered the following GM part number pedals, neither of which work.

15906966 (the pedal that came was for a manual truck and doesn't fit)
15906961 (doesn't fit)

I am now looking at drilling the hole higher on the existing pedal as there is some information online about the measurements. But if anyone has a part number for a pedal that fits it would be appreciated.

Second problem is the hydro boost output rod, and spring/retainer assembly. I found out the hard way that this does not come with the rebuilt units. I ordered a 52-7358 hydro boost and a 10-2754 master. After a lot of searching, I found this site where I can get the parts, http://www.tallonhydraulics.com/store/index.php?main_page=index&cPath=40_16 but after a call there I found out there is no "standard" length of rod and I will likely need to order more than one and cut to fit. Since most of the conversions that are written about include hydro units from a wrecker, this fact was not mentioned in the research I did.

Thanks for your help.

Here's my brake pedal pulled from a 3500 with hydro boost

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Sent from my SAMSUNG-SM-G900A using Tapatalk

 

[toomanyhobbies]

Thanks, I am off to the junk yard to find one, and may grab a hydro boost as well to get the pin, spring and retainer from if it's there.

 

[toomanyhobbies]

I was really lucky and at the yard I found a 2500 Suburban with a hydro boost. I got it and the pedal. The pedal I got is P/N 15705038 which I expect to work. It was a total ***** to get the pedal out, which also is not mentioned on the various posts I have ready about this project. Took me like 4 hrs over 2 days and I had to take the steering column out of the truck, and a bunch of other stuff under the dash.

 

[twt63]

Hey I keep seeing this question asked so here's some help

These part numbers are from AutoZone:
3/8" Hose - 4 Feet
3/8" Brass T Fitting
Power Steering Fluid
Hydroboost Master Cylinder - NM3011 - $70
Brake Booster - 52-7358 - $200
Line 1 - 92007 - $31
Line 2 - 92004 - $23

From LMC Truck:
Brake Pedal w Pad - 35-3632 - $33

From Summit Racing:
Brake proportioning valve of your choice ~$75

Finish it off with 2500 front calipers and 1500 front pads with stainless lines front and rear.

 

[twt63]

Thanks for the info! Any suggestions on the rear for discs?

 

[Tdean91491]

What year model could I rob the master cylinder & booster from?

 

[Joelvv]

Whats the difference between the 92006 and the 92007 power steering hoses that people use on this swap, I have a 98 k1500 and I'm using the 52-7358 hydro unit

To my understanding, the difference is having EVO vs not. I believe 92006 will thread directly into the pump, whereas 92007 needs the EVO solenoid to work.

 

[Schurkey]

MichaelGot Reported.

 

[Wildblue19]

FWIW here's a visual comparison of a HB pedal from a 93 (L) to a 97 (R). MC pin diameter and design is different but location from the pivot appears to be the same.

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