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11-17-2007, 09:37 PM
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#1 |
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Senior Member
 
Join Date: Aug 2004
Location: Centennial, CO
Posts: 2,990
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BBC owners question
Can you fellow BBC owners check something out for me? Does everyone's factory PS pump belt look slightly misaligned like this one? Like the crank pulley is spaced about 1/8 inch too far forward? Mine is the same way and as far as I know, I have the right pulleys and pump. It seems like this would wear out the thrust surfaces of the pump, but if GM did them all this way it must be ok....
 http://67-72chevytrucks.com/vboard/a...1&d=1195318906 Richard Dobson, I hope you don't mind that I stole your pic.
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ClusterTruck: 68 C10 Bought in 89, wrecked in 03. Slow low $ rebuild started '17. 6.0 & TKO http://67-72chevytrucks.com/vboard/s...d.php?t=788602 93 K1500 Short Step, 350, NV4500, EBL flash ECU. Vortec heads & roller cam someday... 05 Jeep Wrangler Unlimited. 3” lift & 6-speed 02 E320 the insurance total “free car” 13 Tahoe LTZ Last edited by clay68c10; 11-17-2007 at 09:49 PM. Reason: credit for pic |
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11-17-2007, 10:12 PM
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#2 |
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Registered User
Join Date: Mar 2006
Location: Kansas
Posts: 865
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Re: BBC owners question
yes the power steering pump pulley's do tend to stick forward a bit further than I think they should. What would concern me about that picture is it looks like the pump is twisted on the mounts. I would be checking to make sure all the mounts are right and tight.
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11-17-2007, 10:18 PM
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#3 |
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Registered User
Join Date: Aug 2007
Location: reno
Posts: 397
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Re: BBC owners question
Mine looked just like yours, the upper mount on mine had a broken stud (in the head), causing the concern. Believe it or not I have been driving it without a upper support, and the bottom bolt cranked down, the belt still looks like your's but has not come off yet, even at high RPM's.
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A sweet 2000 Deville..... |
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11-17-2007, 10:21 PM
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#4 |
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Senior Member
Join Date: Aug 2004
Location: Centennial, CO
Posts: 2,990
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Re: BBC owners question
I have played around with the mounts and adjustments. The best I could get was about as straight as that pic I borrowed shows. I even spaced the pump main bracket away from the block with some washers. I have thought about making a more stable (thicker) spacer plate if I ever had a problem with the belt throwing off.
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ClusterTruck: 68 C10 Bought in 89, wrecked in 03. Slow low $ rebuild started '17. 6.0 & TKO http://67-72chevytrucks.com/vboard/s...d.php?t=788602 93 K1500 Short Step, 350, NV4500, EBL flash ECU. Vortec heads & roller cam someday... 05 Jeep Wrangler Unlimited. 3” lift & 6-speed 02 E320 the insurance total “free car” 13 Tahoe LTZ Last edited by clay68c10; 11-17-2007 at 10:22 PM. |
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11-17-2007, 11:36 PM
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#5 |
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18 Till I Die
Join Date: Mar 2005
Location: Alberta, Canada
Posts: 1,522
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Re: BBC owners question
I had pulley problems for a long time and this is as close as i got it. My Alt was out also but a simple bolt with a stud on it was the fix. I found a old BB Burban and it was all stock. Took a few pics with my digital and used them for reference. I did have a stock waterpump with the shaft sticking out too far and that caused problems as well, always thought it was pulleys or brackets so it can happen.
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2011 GMC Acadia 1969 GMC BBC LS7 2007 GMC Crew Duramax 1987 Camaro Iroc 350 Tuned Port Injection 42000Km 1987 Chevrolet Silverado 350 TBI 1987 Chevrolet Silverado 350 TBI(yes 2) Take me drunk, I'm too home... 
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