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Old 03-12-2014, 12:31 PM   #1
Bobby Lundholm
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Default Re: big base circle cam in stock elem.
Until it's in writing it's only hearsay not a rule.
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Old 03-12-2014, 03:07 PM   #2
Alan Roehrich
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Default Re: big base circle cam in stock elem.
Well, isn't that just precious?

Anyone seen a ruling either way, in writing?
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Old 03-12-2014, 04:04 PM   #3
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Default Re: big base circle cam in stock elem.
I wonder how many have machined blocks for 55mm and 60mm camshaft cores.

Does it apply to Super Stock too?
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Old 03-12-2014, 04:45 PM   #4
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Default Re: big base circle cam in stock elem.
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Originally Posted by SSDiv6 View Post
I wonder how many have machined blocks for 55mm and 60mm camshaft cores.

Does it apply to Super Stock too?
There would be a LOT of illegal SS engines if that were the case. Any cam, right?
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Old 03-12-2014, 06:25 PM   #5
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Default Re: big base circle cam in stock elem.
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Until it's in writing it's only hearsay not a rule.
That's the truth. Could change or be enforced area to area. If you spin a cam bearing and have to repair a block, that means your out?
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Old 03-12-2014, 06:48 PM   #6
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Default Re: big base circle cam in stock elem.
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That's the truth. Could change or be enforced area to area. If you spin a cam bearing and have to repair a block, that means your out?
Now that is funny! There is a difference between repairing a block and machining the camshaft tunnel to use a bigger diameter cam.
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Old 03-12-2014, 11:17 PM   #7
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Default Re: big base circle cam in stock elem.
I've never done it, but pontiac has problems with cam bearings. If you spin one and do excessive damage to the journal how would you repair it? They don't make an oversize cam bearing for my deal. I think the 50mm would be logical for a repair.


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Now that is funny! There is a difference between repairing a block and machining the camshaft tunnel to use a bigger diameter cam.
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Old 03-12-2014, 11:33 PM   #8
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Default Re: big base circle cam in stock elem.
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I've never done it, but pontiac has problems with cam bearings. If you spin one and do excessive damage to the journal how would you repair it? They don't make an oversize cam bearing for my deal. I think the 50mm would be logical for a repair.
A decent machinist could make a sleeve and the machining process would be similar to sleeving a cylinder.
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Old 03-12-2014, 11:37 PM   #9
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Default Re: big base circle cam in stock elem.
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A decent machinist could make a sleeve and the machining process would be similar to sleeving a cylinder.
NEXT THING YOU KNOW, FUEL INJECTION WILL BE ILLEGAL ON 69 CAMARO'S ?????????
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Old 03-13-2014, 12:05 AM   #10
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Default Re: big base circle cam in stock elem.
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A decent machinist could make a sleeve and the machining process would be similar to sleeving a cylinder.
Paul, you are assuming that you use a standard cam bearing and not a roller bearing, right? I believe that is the issue.
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