High Pressure Power Steering Help

[thehata1]

Hello,

I'm putting an LQ4 with hydroboost in my 72 GMC. I cut the bottom metric fitting off the high pressure hose that runs from the booster to the gear box. But, I having a tough time finding a steel 3/8 tube 7/16 tube nut. After doing a ton of research, I just ordered a brass one off of amazon (Dorman 785-293). But, I would rather have the steel one. Does anyone have any suggestions outside of buying a new 1972 hose and cutting the fitting off?

Thanks,
Stanley

[Wildkarde]

DO NOT use a brass compression fitting on the high pressure side of your power steering. You should be able to get ones from any hydralic hose shop that are rated for the pressure. Or you could just have them make an entire hose for you to order, which is what i would reccomend.

[dayj1]

Originally Posted by thehata1

I would rather have the steel one. Does anyone have any suggestions outside of buying a new 1972 hose and cutting the fitting off?

I've never dealt with these folks, but I think this is what you want...

https://hosewarehouse.com/105x6x7-tube-nut-steel

[thehata1]

Originally Posted by Wildkarde

DO NOT use a brass compression fitting on the high pressure side of your power steering. You should be able to get ones from any hydralic hose shop that are rated for the pressure. Or you could just have them make an entire hose for you to order, which is what i would reccomend.

Wildkarde, Thank you for the reply. You're the second person to tell me that. I was trying to save some money. It's looking like going to a hose shop is probably the best option. Thanks, man.

[thehata1]

Originally Posted by dayj1

I've never dealt with these folks, but I think this is what you want...

https://hosewarehouse.com/105x6x7-tube-nut-steel

dayj1, Thanks you for the reply. I went on Hose Warehouse's site prior to posting my initial question. None of their 3/8 tube size fittings not appear to be the correct one. Thanks.

[BR3W CITY]

Edelmann makes adapter stubs on hardline that can be installed with a flare.

[dayj1]

Originally Posted by thehata1

dayj1, Thanks you for the reply. I went on Hose Warehouse's site prior to posting my initial question. None of their 3/8 tube size fittings not appear to be the correct one. Thanks.

That fitting that I linked _is_ the fitting that you need. The high pressure hose fitting at the steering gear is 3/8" tube with a 11/16"-18 thread. Maybe you're confused over the 7/16" vs "11/16" part. 7/16" is the "normal" tube size with 11/16"-18 threads (3/8" tube usually has 5/8"-18 thread").


However, if it makes you feel better, it's fine to use a brass tube nut. The tube nut is not the same thing as a compression fitting that you are getting warned about.

And, of course, the possibility exists that I'm just horribly confused over what you want.

[thehata1]

Originally Posted by BR3W CITY

Edelmann makes adapter stubs on hardline that can be installed with a flare.

BR3W, Thank you for the reply. Do you have any part numbers? I'm curious to see the adapter.

[thehata1]

Originally Posted by dayj1

That fitting that I linked _is_ the fitting that you need. The high pressure hose fitting at the steering gear is 3/8" tube with a 11/16"-18 thread. Maybe you're confused over the 7/16" vs "11/16" part. 7/16" is the "normal" tube size with 11/16"-18 threads (3/8" tube usually has 5/8"-18 thread").


However, if it makes you feel better, it's fine to use a brass tube nut. The tube nut is not the same thing as a compression fitting that you are getting warned about.

And, of course, the possibility exists that I'm just horribly confused over what you want.

dayj1, Thank you, I got confused when I was doing the research on what part I needed. This thread was the only one I could find that made reference to the size. I'll try to find the one you referenced locally and see if I can get this motor running.

http://67-72chevytrucks.com/vboard/s...d.php?t=523502

[dayj1]

Originally Posted by thehata1

dayj1, Thank you, I got confused when I was doing the research on what part I needed. This thread was the only one I could find that made reference to the size. I'll try to find the one you referenced locally and see if I can get this motor running.

http://67-72chevytrucks.com/vboard/s...d.php?t=523502

Try NAPA part 105x6x7 from the “WH” line. I bought one at my local store a couple years ago.

[thehata1]

Originally Posted by dayj1

Try NAPA part 105x6x7 from the “WH” line. I bought one at my local store a couple years ago.

You are the man. I just got back from NAPA. Did not get the weatherhead line. But, I did walk away with Gates steel. I appreciate your help!

I live in Denver, but my wife is from Huntsville. Maybe we can hook up and I'll buy you a beer or lunch.



In case anyone else has the same research issues and for historical thread purposes:

https://www.napaonline.com/en/p/GATG605960607

https://www.napaonline.com/en/p/WH_105X6X7

[nsb29]

I’m running Hydro boost on my truck but I have not bought my lines yet what lines are you running

[thehata1]

Originally Posted by nsb29

I’m running Hydro boost on my truck but I have not bought my lines yet what lines are you running

@nsb29 I have the lines that come from my donor truck. That's why I needed to cut the line and convert to the SAE fitting at the gear box. Several people recommended going to the local hydraulic shop. But, I didn't want to spend that kind of money. If you need help, I'll try. If not, someone else will chime in.

[mongocanfly]

I used stock hoses on my c30....I'm thinking about using -6an stainless braid on my IH and build my own....

[nsb29]

Originally Posted by thehata1

@nsb29 I have the lines that come from my donor truck. That's why I needed to cut the line and convert to the SAE fitting at the gear box. Several people recommended going to the local hydraulic shop. But, I didn't want to spend that kind of money. If you need help, I'll try. If not, someone else will chime in.

What was the donor truck I went back to your thread I didn’t see year or model and how did thay fit other than the one fitting I want a stock Appearing Lins I was thinking it may be cheaper to just buy new lines and change one fitting than to have them custom-made

[BR3W CITY]

FWIW about the Edelmann stubs I mentioned; I don't have a link, but found them by requesting to look at the paper catalog for Napa Power Steering at the store.

[thehata1]

Originally Posted by nsb29

What was the donor truck I went back to your thread I didn’t see year or model and how did thay fit other than the one fitting I want a stock Appearing Lins I was thinking it may be cheaper to just buy new lines and change one fitting than to have them custom-made

My donor truck was a 2003 2500HD. It'll look stock as heck.

[nsb29]

Originally Posted by thehata1

My donor truck was a 2003 2500HD. It'll look stock as heck.

That’s the look I want

[truckdude239]

i just changed the nut on the back of the power steering pump to the one off the 71 pump and just used the stock 1971 c10 flare line

[thehata1]

Originally Posted by nsb29

That’s the look I want

@nsb29 I’m going to try to attach a few photos of everyting finger right.

[thehata1]

Well, they’re sideways... but, they’re there.

[nsb29]

Thanks

[truckdude239]

Dont mind my comment i jsut saw ti was hyrdoboost mine isn;t

[ls1nova71]

I used lines off of a 96, they fit pretty good and look stock. I also used a newer steering box so it's the 3 1/2 turn lock to lock rather than the old 4 1/2 turn one which also uses metric O ring fittings fo didnt have to reflare the lines any at all.

[mongocanfly]

Not sure if any of this will help...I used a early 80s hydroboost...a steering box from 88 2wd truck....and a 2003 5.3.....all fittings are o-ring metric...16mm and 18mm threads.....I used a set of hydroboost lines for a 81...fit was great...looks stock..they had to order the other return line so that's why it's not installed in the pic..