Pontiac - Race The next Level

          
 
 
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Old 01-29-2007, 09:50 PM
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GTO Dan GTO Dan is offline
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Join Date: Sep 2005
Location: Florida
Posts: 2,498
Default Pilot Bearing vs. Pilot Bushing

Hoping some of you stick guys can weigh-in.

I've always run a stick in my GTOs - street and race. I have never had a fit problem with the brass pilot bushing...always stays in place. A much different experience with pilot bearing.

I had a '71 GTO about 20 years back and had to shim the bearing to get it to fit. Probably not a good idea but it was a street car. My race car at that time had a brass bushing and it was a good fit. Four years ago when I rebuilt that race 455 I pulled the brass pilot and installed a bearing. Last year when I pulled the tranny the bearing came off on the input shaft....didn't give it much thought. Last month when I rebuilt mt latest engine I pounded in the bearing. When I we took the engine off the dyno earlier this month again the bearing fell out - WTF?

3 different engines, three different cranks, three different bearings all the same results. The part number on the one that just fell out is 7109 - don't recall the manufacturer.

The listing appears to be correct - based on the guy at the parts store. Am I getting some Chebby bearing that they cross reference to a Pontiac? Anyone have a suggestion on the right bearing? Otherwise I'll just pound in a brass one and be done with it.

Sorry for the long post. Thanks for your help.

Dan

 


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