Wrong PS pump or is it something else?
Thread Starter
Instructor
Joined: Sep 2006
Posts: 227
Likes: 1
From: Bay Area, California
Wrong PS pump or is it something else?
I bought a PS setup removed from a 74 car that I thought would bolt right on to my 63. I tried to installed the pump today so I can see what I need for a crank pulley, but the pump didn't fit. Pump pulley hits the front cross-member of the frame. Pump pulley is pressed on to the pump, which - through research - is from a 75 and later vehicle.
I want to make sure that it is just the wrong pump and not something else wrong here.
Can someone please measure the width (same measurement as in my picture) of a correct pump? And the diameter of a correct pump pulley?
Thanks a million!
I want to make sure that it is just the wrong pump and not something else wrong here.
Can someone please measure the width (same measurement as in my picture) of a correct pump? And the diameter of a correct pump pulley?
Thanks a million!
Le Mans Master
Joined: Nov 2000
Posts: 7,246
Likes: 21
From: Going too fast over the hill. Iowa
You need the older pump that lines up with pulleys on short water pumps and has a filler that leans forward a little.
Last edited by magicv8; May 22, 2011 at 07:05 PM.
Thread Starter
Instructor
Joined: Sep 2006
Posts: 227
Likes: 1
From: Bay Area, California
Thanks Buns. Can I ask you to retake a pic with a ruler against it? When I expand your photo up to actual size, it appears my pump pulley is out almost an inch more.
Le Mans Master
Joined: Nov 2000
Posts: 7,246
Likes: 21
From: Going too fast over the hill. Iowa
Race Director
Joined: Feb 2007
Posts: 15,424
Likes: 8,873
From: northern california
C2 of Year Finalist (track prepared) 2019
Here are a pair of photos of the PS pump on my '63. This is the original pump on a factory-installed system:
Hope this helps you figure out what the problem is.
Jim
Thread Starter
Instructor
Joined: Sep 2006
Posts: 227
Likes: 1
From: Bay Area, California
To my eye, the pump and pulley configuration in your picture looks right. The pump pulley does not need the offset seen in the picture of the '66 pump.
Here are a pair of photos of the PS pump on my '63. This is the original pump on a factory-installed system:
Hope this helps you figure out what the problem is.
Jim
Here are a pair of photos of the PS pump on my '63. This is the original pump on a factory-installed system:
Hope this helps you figure out what the problem is.
Jim
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My pulley is the cast iron one for the 350 HP engine with no A/C. I believe it is meant to run off the 2nd pulley groove. For what it's worth, it is 4.25" from the front of the pulley to the back of the pump. The pulley is 6.125" in diameter. Distance from the centerline of the pulley to the machined surface of the block is 4.125".
I also had pulley clearance issues on my car. I never did get to the root of the problem. I ended up building a custom bracket with an aftermarket power steering pump.
Here is a link to my post about this problem back in 2007:
http://forums.corvetteforum.com/c1-a...-steering.html
I also had pulley clearance issues on my car. I never did get to the root of the problem. I ended up building a custom bracket with an aftermarket power steering pump.
Here is a link to my post about this problem back in 2007:
http://forums.corvetteforum.com/c1-a...-steering.html
Race Director
Joined: Feb 2007
Posts: 15,424
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From: northern california
C2 of Year Finalist (track prepared) 2019
I can just get my fingers between the pulley and mount. Everywhere else there is generous clearance.
Jim
