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- The 1960 - 1966 Chevrolet & GMC Pickups Message Board (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=6)

- - Power steering with GMC V6? (https://67-72chevytrucks.com/vboard/showthread.php?t=532628)

Re: Power steering with GMC V6?

Quote:

Originally Posted by sstock (Post 8630181)

Thanks Captain, but finding it hard to get the right pump seal kit. I'm thinking it is a saginaw unit but did GMC's use a medium duty truck pump? This is not what you typically see on 1/2 ton trucks.
Steve

All the power steering seal kits are showing for GMCs with V6s on the Rockauto site

Re: Power steering with GMC V6?

Quote:

Originally Posted by 60-66 (Post 8630200)

All the power steering seal kits are showing for GMCs with V6s on the Rockauto site

I see that and am skeptical if they are indeed for the medium duty pumps, I ordered a couple kits and will see if they are right or not, will report back but have a hunch they will fit the other smaller saginaw pumps that are more prevalent in chevy vehicles.

Re: Power steering with GMC V6?

IIRC, Oldsmobile and maybe others also used that pump in the mid-60's. I had researched the part numbers at one point and found the Olds models it was used on but have no idea where that is now. I can get you the original GM part number for the pump if that will help.

Bob

Re: Power steering with GMC V6?

Quote:

Originally Posted by BobS (Post 8630768)

That would be great Bob, because I just received the rebuild kits from rock auto and they are both for the smaller saginaw pumps. So to recap, guys wanting power steering seal kits for the pumps for GMC Rock auto has sourced the wrong seal kits from all the vendors they are for the small pumps not for the GMC medium duty pumps found on at least 1/2 ton GMCs with 305 V6 engines. I have my brackets off , glass beaded and painted so if someone wants pictures and measurements, now is the time.

Steve

Re: Power steering with GMC V6?

As of the 1964 GMC parts book (printed in Sep 63), the part number for that pump was 5686708. That might get you pointed in the right direction with someone who isn't afraid to break open a book instead of just punching numbers into the computer. A quick search on the internet shows it was also used on both Olds and Pontiacs so restorers of those makes might be a source of information also. So far, the only thing not leaking on mine is the pump, I suppose that day is coming.

Bob

http://67-72chevytrucks.com/gallery/...PN_5686708.JPG

Re: Power steering with GMC V6?

You're welcome! If I find anything, I'll get it posted and let you know.

Bob

Re: Power steering with GMC V6?

Quote:

Originally Posted by MusicMan70 (Post 5472321)

*It's been a while and I do not guarantee that this was the exact way I did it but...I believe I used this bracket from Ebay. I had a friend make an adapter plate to help me mount it to the water pump. The upper bracket bolts to the engine plate. My fabrication skills are rudimentary at best, but I do have power steering now and have driven this unit over 400 miles without incident. It still needs improving.

Some general questions, but MusicMan seems to have some good details in his post.

I have 1960 GMC with a 305A v6 and I am slowly gathering parts for my power steering addition.

I notice that the tricky part is the double groove pulleys for the crank and water pump.

Would anyone know if I would need 305v6 pulleys or if other pulleys work from other engines?

The water pump ones for SBC's look really similar, but searching ebay, everything says SBC for the cranks.

Thanks for any advice or tips.

Also, @MusicMan70, the bracket you modified to install your pump, do you remember what company made it / part # ?

Thanks,
Scott

Re: Power steering with GMC V6?

AngryPirate; Here is a link to an eBay listing for a similar bracket.

https://www.ebay.com/itm/SBC-Power-S...pe!92881!US!-1

I have not investigated whether SB pulleys would work but my guess is a no.