[DeTomaso] Valve Height accuracy

[Doug Braun]

What say ye for valve spring height accuracy?  The Comp Cams catalog calls for a 1.900" spring height for the beehive springs I'm using.  I measured the valve spring heights on a pair of heads that had been professionally prepared just to double check them.  I get a range of 1.853" to 1.872".  A 0.047" error on the worst one seems high to me.  How close is good enough. 

Doug Braun
blue 73L #5505