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Pullies won't align

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Old Sep 3, 2007 | 03:42 PM
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Default Pullies won't align

Just about to complete a 454 transplant in an '80 L82. The waterpump pullie (2 groove) doesn't line up with the crank pullie. I'm a 1/4 inch off. I do have the short water pump, but can only find one size of pump pullie. I need one that is 1/4 inch thinner. any ideas, or numbers?

Last edited by Me80C3; Sep 3, 2007 at 03:47 PM.
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Old Sep 3, 2007 | 08:36 PM
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67-69 Camaros have the same pulley setups. What side is the alternator mounted. To correctly use the short pump {which is correct by the way} the alt should be on the left with a independent cast bracket bolted to the head.


Last edited by Ironcross; Sep 3, 2007 at 08:45 PM.
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Old Sep 3, 2007 | 09:24 PM
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Thanks for the pic, it will help.
The line up prob is with the waterpump to the crank pullie. The waterpump pullie sits back toward the engine, 1/4 inch too far. I got both the crank and waterpump pullies from Summit. I'm thinkin' about machining a spacer to put behind the waterpump pullie to shim it into line. I can't seem to find the proper pullies for my application. It's just a 454 that I stuffed into an '80 L-82.
(nice pic by the way)
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Old Sep 3, 2007 | 10:06 PM
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There is a spacer already made for that.This one is for the small pattern but they make the large pattern also.
Edit- http://www.corvette-paragon.com/cata...7-CD16BCA965E6

Last edited by ...Roger...; Sep 3, 2007 at 10:10 PM.
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Old Sep 3, 2007 | 10:13 PM
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I've tried Summit and Ecklers with no luck on a spacer. Do I need to go to GM? The line up of the pullies is the only thing holdin' me back from my first start-up.
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Old Sep 3, 2007 | 10:22 PM
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I just changed a 69 pulley set over to a 78 set.Check the centers of the 2 grooves-you might have a mismatched set.
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Old Sep 3, 2007 | 10:34 PM
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I just looked at the site ya posted, they mention pressing the flange on further to use the spacer in certain aplications. Do ya think I could just pull the flange out 1/4" instead?
Thanks for the help BTW, I've been goin' nuts here.
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Old Sep 3, 2007 | 10:50 PM
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Originally Posted by Me80C3
I just looked at the site ya posted, they mention pressing the flange on further to use the spacer in certain aplications. Do ya think I could just pull the flange out 1/4" instead?
Thanks for the help BTW, I've been goin' nuts here.
You could try but it will probably take a press to move it.The flange goes on but I dont know if it will back up.Look at the front edge where it goes over the shaft its sorta a one-way knife edge.Here is a pic of 2 diff. crank pulleys.One is 3/4 on center of the grooves and the other is 5/8.
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Old Sep 3, 2007 | 11:09 PM
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O.K., I understand what ya mean by the knife edge. I have 3/4 inch to the center, between pullie grooves. My pullie has a tower that extends aprox 1 1/2" from the outboard groove. That appears to be my critical measurement. I figure it should be 1 1/4" in order for the inboard grooves to line up. Then everything will line up just fine.
Thanks again!
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Old Sep 4, 2007 | 10:12 AM
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If you space out your water pump your alt & PS won't line up!
You need one of those ridiculiously expensive "proper" crank pulleys.
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Old Sep 4, 2007 | 12:41 PM
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These might do the trick for you. Also, check your harmonic balancer is on all the way.

Mr. Gasket 6129 - Mr. Gasket Water Pump Pulley Shim Kits

Product images may differ from actual product appearance.

Pulley alignment is crucial to belt retention at higher rpm use. Installs between water pump flange and pulley. Includes two 1/16'' and one 1/8'' shim.
http://www.jegs.com/webapp/wcs/store...10002_14140_-1
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Old Sep 4, 2007 | 12:47 PM
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You guys are great! Thanks, so very much, for the input.
I think I have a handle on the prob now.
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