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at lower rpm the tc has a better output than the p pump which can get choppy at idles especially if the flow was restricted from wear or damage and is felt by steering assist for partial turn, then stop, then continue, then stop. The pulley on p pump if the valve is correct would need to have the output at idle needed meaning a small pulley which also can get to be a limitation in rpm at times. But that’s isn’t a concern here.
the tc pump at higher rpm pista out less than p. But then tc can just go faster in rpm wise with a smaller pulley to match and cover a large range and give a good rpm height. It’s why race cars love it.
Makes sense, although I can’t say I’ve ever experienced choppy steering with a p pump. Every vehicle I’ve driven always had smooth steering. Not saying you’re a liar, just wron-I’m kidding
slight update: I found out my first car, a 1990 olds 88, had a TC pump when I thought all gm 3800 cars had a CB pump. Beings that 1988 to 1991(ish, crossover) is a source for TC Pumps, The 1988 lesabre I scavenged parts off of makes for somethign amazing in that I pulled the PS pump and its been sitting on a shelf in my moms basement sicne I was like 17.
Iwent and grabbed it, has the normal mounting like most TC pumps, so I dont need to go buy one to have a normal pump to test theorys on vs the one I currently showed before on this thread.
I have that exact pump. Going strong for 25 years now.
It had been discontinued long ago but the part number is: A1 Cardone - 20-6244
Napa - NSP 816795
Originally Posted by Scndsin
Once upon a time (when I first got to FTE) , there was a single, magic Cardone part # for a bolt on Sag pump that would go anywhere a Ford Corporate II PS pump would go.
All you had to do is match up/adapt the high pressure line. It was allegedly from the late 70s. I got one of the few before the Cardone number started coming up no longer valid.
The pump is a std 4-hole Sag mount, but has a 3 hole, C-shaped adaptor (not seen in pic & I can't find one either) & uses a Ford diameter shaft & press on pulley.
I looked on Rock the other day & there are several applications listed for 77-79 F series that show Sags, but none of the illustrations show this adaptor on the images & none have reservoirs. (Cans)
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