Strait or tapered shaft P/S pump shaft? - Team Camaro Tech
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post #1 of 4 (permalink) Old Aug 23rd, 10, 08:08 PM Thread Starter
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Dave
 
Join Date: Jun 2006
Location: Vacaville CA
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Strait or tapered shaft P/S pump shaft?

When I put a March pulley/serp. belt set up of my '69 they needed to know about the pump shaft. When I look at replacement P/S pumps I see no mention of the shaft differences. Down the road I will be upgrading to the 3rd gen. box and would like to put on a new pump at that time. I don't what to have to replace the March serpentine style pulley that I already have.

Is there a year difference or production change that help me determine the correct pump?

Thanks,

Dave

Known to run with scissors....
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1969 Camaro Z/28 "clone", GMPP ZZ383, Autogear M22W, Moser 12bolt w/TruTrac 3:73.
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post #2 of 4 (permalink) Old Aug 23rd, 10, 08:40 PM
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Steiner
 
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Re: Strait or tapered shaft P/S pump shaft?

Some have a pressed on pulley, some use a keyed shaft with a nut. I'm willing to bet you have the keyed one which I guess would be considered a straight shaft. As long as you ask for a '69 pump it will most likely have the same shaft but should be built for higher pressure and will probably have a female port instead of male. I bought one not long ago from Auto Zone or Advance and other than having to put on the Weatherhead adapter for the high pressure hose it works fine with the third gen box.

'69 Camaro
Dart 400-AFR 195-224/224 HR-Powerjection III TB with F.A.S.T. Sportsman XFI
TKO 600-Moser 3.42-Detroit Truetrac
500hp/538lbft

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'69 Camaro Beater-SFT 327-M20-Moser 4.10-sold
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post #3 of 4 (permalink) Old Aug 24th, 10, 07:19 AM Thread Starter
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Dave
 
Join Date: Jun 2006
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Re: Strait or tapered shaft P/S pump shaft?

The shaft on my P/S pump is tapered with no keyway. This is why I'm confused. The original motor was in the car when I got it. The pump and hoses appear to be original to the car.

Dave

Known to run with scissors....
__________
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post #4 of 4 (permalink) Old Aug 24th, 10, 12:00 PM
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Dustin
 
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Re: Strait or tapered shaft P/S pump shaft?

I just went through this a couple of months ago. I had a thread in this section about it. I ended up buying a new pulley to match. The pump I got from AutoZone did not have the fitting on the back, I had to take it off my original and install to fit the pressure hose. I also ended up adding 3 washer's behind the one location in the bracket since the two types of pumps are slightly different. The one I replaced was a tapered, the new one is a keyed shaft (hence the new pulley to match).


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