Peter and Gilly,

In the absence of cold hard facts I'm going to go with both of your arguments of 8 to 10 degrees. I would of course do my own chains, because the chain is cheap. I was looking for a difinitive answer to give to clients when I do the inspection on their cars. I will strongly urge that they replace the chain so I don't end up doing a valve job on their car. Peter, I agree with you; even though I have the 1 degree offset jig that bolts to the block to guide the drill, it is a PITA drilling and tapping 36 holes on the early engines without the special bolts. Thanks for all the input guys.

Peter

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