Looking for -6AN adapter for PS pump

[ltdmstr]

So I'm doing a bunch of work on my '68 C10 and one is adding power steering in place of the stock manual setup. It's a 250 straight 6 and I have the pump and mounts that I purchase from the classifieds. I'm also adding disc/drum power brakes with a hydroboost assembly in place of the manual drum/drum setup. With this setup, the power steering lines run from the pump to the hydroboost then to the steering box then back to the pump. I figured I'd make my own lines using Earl's power steering hose and connectors which are very nice. The problem I've run into is, the stock power steering pump is 5/8-18 male flare fitting, and all the Earl's stuff is -6 AN. I've spent hours searching for an adapter to go from 5/8-18 male to -6 AN female, but have yet to find anything. I've also spent an hour on the phone with techs at Summit, and they couldn't come up with anything either. I tried calling Earl's several times and despite long waits (45+ minutes), nobody ever answers the phone there. I even tried calling the corporate number multiple times, and no luck. So I'm just wondering if maybe someone has a suggestion on how to solve this.

[Richard]

Since you are making your own hoses could you just make that hose with -6 at one end and 5/8-18 at the other?

[ltdmstr]

Originally Posted by Richard

Since you are making your own hoses could you just make that hose with -6 at one end and 5/8-18 at the other?

Nope. They only make -6 AN hose ends. So I need some kind of adapter between the two pieces.

[Richard]

Do you need a male or female thread for the hose end at PS pump?

[Richard]

https://www.summitracing.com/search/...inverted-flare

[MidnightChevy]

A picture would help but I think an AN894 or NAS1564 would work. Try giving Genuine Aircraft Hardware a call at 805-239-3169. They should be able to get you what you need.

[ltdmstr]

Originally Posted by MidnightChevy

A picture would help but I think an AN894 or NAS1564 would work. Try giving Genuine Aircraft Hardware a call at 805-239-3169. They should be able to get you what you need.

The AN894 looks correct, but the sizes don't match. I can try them on Monday, but don't see a match on their site.

[ltdmstr]

So here are photos of the pump, and the Earls hose end.

[ltdmstr]

Basically, what I need is this, but with female threads on the 5/8 end.

[MidnightChevy]

I think that you need the NAS1564 then. Let me find a picture of one.

[MidnightChevy]

https://www.gen-aircraft-hardware.co...f/ftgadapt.pdf

The file was too big to upload. Looks like you might have found it on your own, though. It says they have more sizes available so it's worth a call. Hope it helps.

[ltdmstr]

Originally Posted by MidnightChevy

https://www.gen-aircraft-hardware.co...f/ftgadapt.pdf

The file was too big to upload. Looks like you might have found it on your own, though. It says they have more sizes available so it's worth a call. Hope it helps.

Got it. If I'm reading it correctly, it looks like the NAS 1564 is straight thread female to AN male, which is what I need. The chart shows 5/8 female to -10 AN male. I'll call them Monday and see if they have 5/8 female to -6 AN male. Thanks.

[Richard]

Maybe change the flow control valve to get what you need? A quick search turned up this https://www.jegs.com/i/JEGS+Performa...yABEgK51_D_BwE

[ltdmstr]

Originally Posted by Richard

Maybe change the flow control valve to get what you need? A quick search turned up this https://www.jegs.com/i/JEGS+Performa...yABEgK51_D_BwE

That would be great if I can find one with internals that matches the stock part. I'll do some checking and see what I find.

[Richard]

Still poking around for my stuff saw this https://www.jegs.com/i/JEGS/555/100708/10002/-1

[ltdmstr]

Originally Posted by Richard

Still poking around for my stuff saw this https://www.jegs.com/i/JEGS/555/100708/10002/-1

I thought that would do it, but internally it's cut for a double flared hard line, not for the male end of the pump fitting. Same for the versions from Fragola and Russell.

[Richard]

If you decide to go the flow restrictor route give Turn One a call, am sure they can get you what you need. Maybe even get an adapter. I had a custom PS pump built by them. Very good to work with. https://turnonesteering.com/

[ltdmstr]

Originally Posted by Richard

If you decide to go the flow restrictor route give Turn One a call, am sure they can get you what you need. Maybe even get an adapter. I had a custom PS pump built by them. Very good to work with. https://turnonesteering.com/

I'm not sure how well a flow restrictor will play with the hydroost. But I may give them a call. If something is out there that will work, maybe they'll know.

[Richard]

Probably should have use the same term I did in a previous post "flow control valve" or regulator. Anyway they know their stuff regarding steering components. Built me a type 2 pump for my ls swap that flows over 5 gpm at 1500+ psi. Hopefully will handle the ram assist steering and ported hydro-boost setup I am installing on my truck.

[ltdmstr]

Still no luck. Tried calling all the suggested sources and many others. Probably spent another 3-4 hours on the phone this morning. Can't believe this isn't a common item. Probably going to have to try to return the hose and fittings and get some custom lines made.

[siggyfreud]

Not likely going to be common because many aftermarket PS pumps have a female 5/8 port rather than a 5/8 male fitting. Probably fewer people retaining the stock/fitting pump but not the stock-style hoses. So I'm not sure the market justifies the existence, which is unfortunate in your case.

[roboticjunky]

Remove the fitting that is on your current pump. Then put these fitting on. https://www.summitracing.com/parts/clp-cpfcv-k

[ltdmstr]

Originally Posted by roboticjunky

Remove the fitting that is on your current pump. Then put these fitting on. https://www.summitracing.com/parts/clp-cpfcv-k

That's for the later style saginaw pumps. The internal portion on the early pumps is different. It also changes the flow rate, which I don't want to do because the output line is going from the pump to the hydroboost and less flow will reduce pressure for the brakes. If I could find one of these that works with the early pumps and has stock flow rate, that would be perfect. The part I have on order from inline tube is supposed to be similar and work with the early pump.

[Richard]

If I could not find the correct regulator I would probably just get a new or reman PS pump from a newer gen truck. Same style pump was used through the 80's and it will have the female thread output. Adapters to the -6 seem readily available for those. Maybe post in the later model parts section for the regulator.

[ltdmstr]

I suppose not too many people are using the old pump with hydroboost, etc. I'm just surprised that with just fittings available for pretty much any conceivable combination, nobody makes one for this. So, the latest is that I ordered a part from inline tube that looks like it will work with the old pump and has female threaded output. If that works, I can get a male/male adapter that will work, and problem solved. But I'd say chances are 50-50 it will work. Problem is I have to wait a week for it to arrive via USPS bc inline tube doesn't offer any kind of expedited shipping. At this point, I'll just be happy if it works. If not, it's custom hoses or a new pump with female output.