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Discussion Starter · #1 ·
I have the hold down bolt as tight as I can get it and can still (not real easily)turn the distributor,and it will turn itself and retard the timing when driving. Whats wrong???
 

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Has the intake or intake faces been cut? The distributor might be bottoming out on the oil pump drive as opposed to the manifold.

The way to check this is to drop the distributor in without a gasket. It should sit down all the way without any gap. If it doesn't then you need to use a spacer.
 

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Discussion Starter · #3 ·
it doesn't have a gasket---has an o-ring. never had this problem till I had the Dist rebuilt. Since I put it back in its been this way

Its a 1960 Cadillac engine
 

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Discussion Starter · #5 ·
I think I may have to shim between the dist & the block. Just remembered the dist was sitting on a little piece of the valley pan gasket and I cut that little piece of gasket off so the dist would set flush on the block.I'm going to take the holddown loose and see if I have any gap between the dist and block & if so them I will have to shim it
Does that sound right?
 
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