Thread: You Guy's were right!
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10-12-2008 10:18 AM #1
CHR Member
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- Aug 2007
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- Car Year, Make, Model: 1976 Cadillac Seville with 454 Chevy
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This could be the result of several problems so let's start with the easy ones. How much cam lift and what type of rocker arms?
If the rockers are stock type are they binding on the rocker stud before full lift? If so they wi;ll have marked the edge of the stud. Do you have enough piston to valve clearance?
Is the valve spring ibstalled height enough for the cam you have?
Check a valve at full lift and see if you can slip a .060 feeler gauge between the spring coils. Or you could try pushing down on the valve at full lift, it should be able to go at least another .050.
These three things will give you a start.Buying parts I don't need, with money I don't have, to impress people I don't like 
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10-12-2008 10:26 AM #2
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The cam is a performer cam and the rockers and springs are stock but new.
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10-12-2008 12:12 PM #3
Banned
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- Car Year, Make, Model: The thing in the avatar
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The 385 engines came with either stud rockers(early heads) or sled fulcrums..Which one are you using??
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I didn't know him but followed his posts. True hotrodder, he will be missed. RIP 34_40 MIKE. Condolence to the Mrs. Nolan
We Lost a Good One