The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Engine & Drivetrain > LSx Swaps

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 08-14-2018, 11:04 PM   #1
Bird dog
Registered User
 
Join Date: May 2017
Location: Lynden, WA
Posts: 91
Power steering lines on 67-72 swap

Ther have been a few threads on The power steering lines on a swap, but I cant find any info specific to the 67-72’s.

The “stock” gearbox has an 11/16-18 inverted flare female and the 6.2 crate pump requires that Earls extention fitting to get the lines past the pulley. I bought the Earls fittings (looks like it will work great) but because the inner fender covers the gearbox fittings, it doesnt leave room for the 11/16 to 6an adapter and a 90. I dont want to trim the fender at this point (almost done with the build). No one makes an 11/16 to an 90 degree fitting.

What has everyone done? At this point I think we’re going to resort to buying a stock 72 power steering line and using the inverterted flare fitting, building new steel lines to adapt to 6an.....

Any other suggestions?
Bird dog is offline   Reply With Quote
Old 08-14-2018, 11:13 PM   #2
Ghost's68
Registered User
 
Ghost's68's Avatar
 
Join Date: Jun 2016
Location: American Canyon, CA
Posts: 253
Re: Power steering lines on 67-72 swap

I just went down to a local hydraulic shop and had them make me lines. I’m not running any inner fenders and no pump extension. Just a adapter to go to 6an. Clears the pulley just fine.

I just used some wire and mocked up the lines with the bends and it worked out perfectly.
Ghost's68 is offline   Reply With Quote
Old 08-16-2018, 12:38 PM   #3
Steve Cole
Registered User
 
Join Date: May 2012
Location: Faith,NC
Posts: 1,626
Re: Power steering lines on 67-72 swap

I cannot confirm this but I heard you can just unscrew the fitting from the back of your old pump and screw it into the LS pump, allowing you to use your old line.

Can someone confirm or deny this?
Steve Cole is offline   Reply With Quote
Old 08-16-2018, 12:58 PM   #4
bs46488
Registered User
 
Join Date: May 2014
Location: San Diego, CA
Posts: 547
Re: Power steering lines on 67-72 swap

I bought a new line and cut the end off to mock it in place.

Then since I don't have a TIG, i used a local mobile welder and had him weld the old line with the new style end on it. He charged me very minimal for the job.
__________________
Project Engine Stand 1972 SWB conversion: http://67-72chevytrucks.com/vboard/s...d.php?t=673914

1970 Nova: http://67-72chevytrucks.com/vboard/s...d.php?t=708161
bs46488 is offline   Reply With Quote
Old 08-16-2018, 03:38 PM   #5
sprint_9
Registered User
 
sprint_9's Avatar
 
Join Date: Nov 2012
Location: 9
Posts: 862
Re: Power steering lines on 67-72 swap

If you have room, use the stock line and crimp a new end on it.

I've seen others use -6 line with a 90 on the pump end, but instead of running directly toward the engine they go toward the front of the truck and loop them more to get under the fender.
Attached Images
 
sprint_9 is offline   Reply With Quote
Old 08-16-2018, 07:38 PM   #6
Bird dog
Registered User
 
Join Date: May 2017
Location: Lynden, WA
Posts: 91
Re: Power steering lines on 67-72 swap

Quote:
Originally Posted by sprint_9 View Post
If you have room, use the stock line and crimp a new end on it.

I've seen others use -6 line with a 90 on the pump end, but instead of running directly toward the engine they go toward the front of the truck and loop them more to get under the fender.
Maybe the 6an 90's I had were "longer" but I couldnt get the "loop to the front" to work either......my inner fender was still too close. My backup plan was to bend the fender up to clear, but I ended up using the fitting and most of the tubing off the stock line and flaring a tubing to 6an fitting on. I used the black coated PTFE line from Russel. I had never seen that stuff before. It ended up looking like a stock line. Which I liked. I haven't taken a good pic of it yet, but you can barely see the tubing in this pic.
Attached Images
 
Bird dog is offline   Reply With Quote
Old 08-16-2018, 09:50 PM   #7
flashed
Registered User
 
Join Date: Oct 2009
Location: canton ga
Posts: 12,724
Re: Power steering lines on 67-72 swap

Bird dog , what A/C bracket did you use ?
flashed is offline   Reply With Quote
Old 08-16-2018, 10:06 PM   #8
Bird dog
Registered User
 
Join Date: May 2017
Location: Lynden, WA
Posts: 91
Re: Power steering lines on 67-72 swap

Quote:
Originally Posted by flashed View Post
Bird dog , what A/C bracket did you use ?
Holley high mount. I can't remember the part number though.
Attached Images
 
Bird dog is offline   Reply With Quote
Old 08-17-2018, 03:03 AM   #9
ls1nova71
Registered User
 
ls1nova71's Avatar
 
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
Re: Power steering lines on 67-72 swap

Quote:
Originally Posted by Steve Cole View Post
I cannot confirm this but I heard you can just unscrew the fitting from the back of your old pump and screw it into the LS pump, allowing you to use your old line.

Can someone confirm or deny this?
Yes, this will work as long as you are using a truck pump. The smaller type2 pumps found on cars it wont work.
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html

5.3 swap into my RUSTY '71 C10
http://ls1tech.com/forums/conversion...71-c-10-a.html
ls1nova71 is offline   Reply With Quote
Old 08-21-2018, 06:40 AM   #10
my kids toy
Registered User
 
Join Date: May 2018
Location: Grand Haven, mi
Posts: 269
Re: Power steering lines on 67-72 swap

what air breather system is that ?
my kids toy is offline   Reply With Quote
Old 08-29-2018, 10:44 PM   #11
Robznob11
Registered User
 
Robznob11's Avatar
 
Join Date: Feb 2004
Location: brownfield texas (west texas)
Posts: 1,936
Re: Power steering lines on 67-72 swap

Quote:
Originally Posted by ls1nova71 View Post
Yes, this will work as long as you are using a truck pump. The smaller type2 pumps found on cars it wont work.
You also want to change the internals as well because the ls pump will put out more psi and make it feel real light ....mine is a truck and I just swapped and used a regular hose!
__________________
The Ghost 67 short wide full custom. 550 hp LSX, 4l80E, narrowed 9". Body dropped w/air ride!
........................ ___
.........________//__{\_____
,,,,,,,/__(⊙)___//___/__(O)_/

@disciple2.rc 💪instagram💪
LED TAILS
Robznob11 is offline   Reply With Quote
Old 09-04-2018, 12:51 PM   #12
Haggar
Registered User
 
Join Date: Aug 2013
Location: Oxford, MI
Posts: 38
Re: Power steering lines on 67-72 swap

I don't remember the brand, but I just bought an adapter fitting for mine to go from flare to O-ring, and put a few small bends on my original 1971 line, and it fit well to my LQ4. Mine is from a Hummer H2, I think 2005. I am running a redhead steering box, no issues with any over it so far, 350 miles on the setup.
Haggar is offline   Reply With Quote
Old 11-19-2018, 05:06 PM   #13
Derek.Matirne
Registered User
 
Join Date: Sep 2015
Location: Haughton LA
Posts: 75
Re: Power steering lines on 67-72 swap

I just cut my line, the hard line, and used a compression fitting to join the two together, now that being said, i have not tested it yet, but the fitting should hold...
Derek.Matirne is offline   Reply With Quote
Old 11-19-2018, 06:40 PM   #14
1971Stepside
Almost Satisfied
 
1971Stepside's Avatar
 
Join Date: Mar 2002
Location: Springfield, MO
Posts: 2,932
Re: Power steering lines on 67-72 swap

I went with hydroboost, so I took the stock hoses (metric and standard 71's) and had them reworked at my local machine shop with 6AN PTFE hoses. This was not a cheap way to go...
Attached Images
 
__________________
1971 C10 Stepside. LSx 6.0 with BTR Stage IV, Speed Engineering Headers, 4L80e transmission w/3200 Circle-D Stall. 3.73. Posi. Purchased this truck when I was 17. I started the rebuild (or take apart) in 1993. I have drug it around all over the country in pieces. Finally back on the road in 2021.

"I can't complain, but sometimes I still do. Life's been good to me so far."
1971Stepside is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 12:11 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com