Lash caps after cam mod

Also, You could take the head to a machine shop and have the valve seats recut. Then have them grind the valve stems to a more normal clearance of about 2MM.
He needs longer, shaving stem and valve seats cut gets him even wider clearance than what he has now. But new valve seats that will get him up
 
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Still wandering about street/fa cam upgrade? Checking valve clearances on the rocket is tricky, your numbers are very out of spec, makes me think something is up with your checking method or base circle on cam is off by atleast that 1mm. 4mm shims seems excessive.
You might be right, have never been close to 0.93 gap with feeler gauges before. Will know in a few days when a shipment of 2.45-3.15 shims and 1.1 mm lash caps arrives. First thing I'll do is to fit a 3.15 shim to the intake valve having max clearance and see if I still end up with the same number.
 

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