I took a dial indicator and some calibrated rocks and set the intake valves at 0.438" lift, which is how much lift my current cam has to show the difference. It was recommended to me, if I can, to get 0.020" shaved off the bottom of the head if I can. Hmm, I may try that after I port and re-shape the chamber on my running head, I'll see if the Machine Shop in Elko (2.5 hours away..) can shave the head in the same day. In the past they have been able to do same day work for me when scheduling it in. I need to run some numbers, but l don't think it's possible to bring the compression up too high from shaving the head while using a head gasket that is around .030" thicker than the stock steel shim gasket that is impossible to get now.
I adjusted the color for more contrast because the sun was white washing it out.
Then I brought it indoors.
You can see where I was working with the dial indicator as it scrapped the carbon off the valve on the right. I just shifted the set up left to do the other valve.
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"How I learned to stop worrying and love the OHC Pontiac L6"
The Silver Buick- '77 Skylark coupe w/455, SPX, MegaSquirt 3 & TKO-600 (Drag Week 2011, 2012 & 2015!)
1969 Firebird with a turbo'd Pontiac L6 controlled by a MegaSquirt 3 and backed with a microsquirt controlled 4L60e and 4.56 gears! (Drag Week 2018!)