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I agree it looks like a 616.912...
I have my paper NA engine manual out....
Can you tell if the cam and caps are chilled or not ?
Ok.... if the ' 10 ' cam is correct... then with a new chain..
intake opens at 9 degrees after TDC
closes at 15 degrees after BDC
Exhaust valve opens 27 degrees before BDC
Exhaust valve closes 16 degrees before TDC..
Last edited by leathermang; 09-27-2015 at 02:13 PM.
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