quantum , it funny that you posted this thread because I just bought the same exact cam for my 351w I'm building. I'm a little bit worried about clearance too. The valve relieves in my new pistons seem pretty deep(not sure exactly).
I was thinking about getting them flycut before I put it together and not have to worry about getting it together and finding out that I need to tear it apart to get the pistons cut.
Competition Cams recommends that you use a solid lifter when checking piston/valve with a hydraulic cam because hydraulic lifters bleed down and give a false reading.
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'82 GT 351W (.060)Comp Cams 274* Extreme Energy cam, ported & polished heads w/ 1.94/1.60 valves 10.3:1 flat top pistons,stealth intake, Mallory dizzy,Holley 750dp carb, BBK shorties,Flowmaster exhaust,C-4 with 3700 stall converter, B&M pro shifter,8.8 rear, 4:10's, subframes, electric fan, powermaster alternator, 4 core radiator.
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