Power Steering Conversion - Old Pump/New Box? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bluec10 · 08-09-2009, 03:50 PM

I have a '69 GMC with an L6. I'd like to add power steering. I salvaged the front clip from an '84 GMC that had power steering. Will the '84 power steering box work with an original power steering pump? I want to keep the original look under the hood.

clinebarger · 08-09-2009, 08:54 PM

The pressure will work. 84 used O-ring style metric fittings on the gearbox 68 used SAE double flare. find a 80 & up power steering line that is the length & bent the way you need & cut the pump end off use a 68 nut and double flare the end. down side is you have to do this every time you need a new line.

jbristo67 · 08-10-2009, 12:00 AM

I put a serp setup off of a 94 Chevrolet pickup on mine. I am using the stock pressure hose off of a 72 with no problems

Tx Firefighter · 08-10-2009, 05:58 AM

All you have to do is take a 1 inch wrench and unscrew the fitting out of the back of the pump and replace it with a later one that matches the box and hoses. They interchange.

08-09-2009, 03:50 PM	#1
bluec10 Registered User Join Date: Apr 2002 Location: Manitoba, Canada Posts: 663	Power Steering Conversion - Old Pump/New Box? I have a '69 GMC with an L6. I'd like to add power steering. I salvaged the front clip from an '84 GMC that had power steering. Will the '84 power steering box work with an original power steering pump? I want to keep the original look under the hood. __________________ Present: 2015 Tacoma. Yeah, not a GM, but I love it. 1969 GMC 32,000 - fix, drive, relax, fix... 2019 BMW R1250 GSA - Yahoooooooo 1979 Honda GL 1000 - retro touring at its best. Past: '05 Sierra 4x4 - Had 270,000 KM and running well when it was written-off by a stop sign runner. '94 F-150 from the "F word" company. I'll admit it...good truck. Sold what was left of it for $800 to a guy who came to pick it up at 11:00 PM with cash in hand. Hmm. '79 Sierra Grande (Black) organ donor - perfect rebuildable 4-bolt 350 and a good TH350. '76 Sierra Grande (Orange) - hate isn't too strong a word. Kid who bought it turned it into a hot rod. '68 C-10 R.I.P. - Dad's old truck...too far gone to resurrect. '59 C-50 - with hoist. Truck is gone, wife isn't. Nuff said.

08-09-2009, 08:54 PM	#2
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: Power Steering Conversion - Old Pump/New Box? The pressure will work. 84 used O-ring style metric fittings on the gearbox 68 used SAE double flare. find a 80 & up power steering line that is the length & bent the way you need & cut the pump end off use a 68 nut and double flare the end. down side is you have to do this every time you need a new line.

08-10-2009, 12:00 AM	#3
jbristo67 resident oilfield trash Join Date: Jan 2009 Location: Lubbock TX Posts: 1,465	Re: Power Steering Conversion - Old Pump/New Box? I put a serp setup off of a 94 Chevrolet pickup on mine. I am using the stock pressure hose off of a 72 with no problems __________________ 1967 SWB C10 396/400 factory air factory tach (sadly had to send to a new home) 1986 Honda 70 Fourtrax 1991 Chevrolet K5 blazer 2wd 1982 Mastercraft Pro Star 190 Stars and Stripes 2002 Chevrolet Tahoe 2011 Nissan Armada

08-10-2009, 05:58 AM	#4
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: Power Steering Conversion - Old Pump/New Box? All you have to do is take a 1 inch wrench and unscrew the fitting out of the back of the pump and replace it with a later one that matches the box and hoses. They interchange. __________________ I'm on the Instagram- @Gearhead_Kevin

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