P/S Gearbox Plumbing - The 1947 - Present Chevrolet & GMC Truck Message Board Network

nandress · 09-08-2006, 01:31 AM

I have retrofit a '71/'72 power stearing gear into my '67 C-10 (that originally had a manual gearbox).

Now to put hoses to it... Which hole gets pressure: the big one or the little one???

Thanks!!

GREASEMONKEY72 · 09-08-2006, 02:34 AM

now i could be wrong cuz i looked at it at night with a flashlight however it looked like the bigger hose goes to the front fitting on the box and the lower hole on the pump and the smaller hose in the rear hole on the box and the upper hole on the pump i hope that helps and goodluck

-steven

nandress · 09-08-2006, 02:44 AM

Well, thanks for looking, but not really!!

I'm not worried about the pump, since I have a Type III (or maybe Type II) pump for an aftermarket serpentine. As such, the plumbing is a little different, and to use high pressure hoses with AN fittings, the plumbing is 1) -6 from pump to box, 2) -6 from box to remote reservoir, and 3) -10 from reservoir to pump.

I need to know which hole gets the fluid from the pump, and on my gear box, there were two different sized inverted flare holes: 5/8-18 (little hole) and 11/16-18 (big hole).

Thanks!!

Zeke · 09-08-2006, 05:17 AM

small hole is pressure and large is return.

nandress · 09-08-2006, 01:34 PM

Thanks!!

09-08-2006, 01:31 AM	#1
nandress Senior Member Join Date: Sep 2006 Location: Nevada Posts: 211	P/S Gearbox Plumbing I have retrofit a '71/'72 power stearing gear into my '67 C-10 (that originally had a manual gearbox). Now to put hoses to it... Which hole gets pressure: the big one or the little one??? Thanks!!

09-08-2006, 02:34 AM	#2
GREASEMONKEY72 Registered User Join Date: Aug 2006 Location: Bakersfield,CA Posts: 7,893	Re: P/S Gearbox Plumbing now i could be wrong cuz i looked at it at night with a flashlight however it looked like the bigger hose goes to the front fitting on the box and the lower hole on the pump and the smaller hose in the rear hole on the box and the upper hole on the pump i hope that helps and goodluck -steven __________________ -steven Alte Seele S.S. "Allison" '72 C/10 LWB 350SB/TH350 - DD PITBULL IS NOT A CRIME

09-08-2006, 02:44 AM	#3
nandress Senior Member Join Date: Sep 2006 Location: Nevada Posts: 211	Re: P/S Gearbox Plumbing Well, thanks for looking, but not really!! I'm not worried about the pump, since I have a Type III (or maybe Type II) pump for an aftermarket serpentine. As such, the plumbing is a little different, and to use high pressure hoses with AN fittings, the plumbing is 1) -6 from pump to box, 2) -6 from box to remote reservoir, and 3) -10 from reservoir to pump. I need to know which hole gets the fluid from the pump, and on my gear box, there were two different sized inverted flare holes: 5/8-18 (little hole) and 11/16-18 (big hole). Thanks!!

09-08-2006, 05:17 AM	#4
Zeke Active Member Join Date: Jun 2002 Location: L.A. Lower Alabama Posts: 453	Re: P/S Gearbox Plumbing small hole is pressure and large is return. __________________ 1969 C10 350 3spd 1995 GMC 3500 XC 350 dually When Thomas Edison worked late into the night on the electric light, he had to do it by gas lamp or candle. I'm sure it made the work seem that much more urgent. George Carlin

09-08-2006, 01:34 PM	#5
nandress Senior Member Join Date: Sep 2006 Location: Nevada Posts: 211	Re: P/S Gearbox Plumbing Thanks!!



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