10:1 compression will probably ping even on premium gas. Contact Delta Cams, $100+ or so for a regrind, more lift will help with the ping, flow more fuel, make it think it's running richer. Use swivel head valve adjusters from a Porsche 911 to keep the valve contact patch flat.
_________________ '78 Chevy LUV,1.9,4sp,headers,31's,SAS Dana 30,Dana 20,SOA rear w/Aussie Locker, rough body, bought new 12/4/78. '87 Trooper,2.3,5sp,headers,31's,ball joint flip & spacer,Aussie Locker rear,Superwinch hubs,brush guard w/5.5K winch,more to come.
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