quench article

I like the tight Q cuz I can run 87E10@185psi (or more) with aluminum heads, and with one size smaller cam,than I wanted to run;and so, that makes tons of low-rpm torque,and gets mega-fuel-economy.Over 100,000 miles, that would add up to a lotta lotta cash saved.
That combo was very happy with idle-timing of 12, and 28*@2800, and topped out at 32 to 34@3400.
The Q was .039, and Scr was 10.8............... wiped lobes.
Changed cams ( next bigger), and decked the block for KB107s at plus .005 out of the holes, and latest combo is .034Q/10.95Scr. Lost some low-rpm torque, gained some power at the top, ruined my fuel economy. About same psi.About same timing curve. Different trans to make up for the lost first-gear torque. I could hardly believe the low-rpm torque loss of just 7* difference in durations. New cam likes more idle-timing, but with a manual trans it gets too jumpy at the bottom of first gear, so 14* is all it gets.