Things to test and measure at dyno test break this document into goals and procedures It would also be good to convert the procedures into step by step. Wire O2 sensor so always on calibrate tach on timing light check timing light against Randy's attach dmm and unsigned click reading when start logging with usigned some positions click twice or thrice get O2 sensor logs of each run calibrate O2 sensor with dyno test results calibrate Heathkit versus shop CO meter. Diddle with Idle mixture and get various data points. maybe try run with intake valves set at .012" measure advance curve What full advance works best? dyno runs with and without vacuum advance dyno runs at 5 and 10 inches of vacuum Use my piston rise guage to get readings every 1/8" of piston rise rather than at set RPMs Do all needles rise to about the same amount at the same RPM at similar conditions? 5in vac, 10 inch vac, full throttle Run each needle at 1 full turn doan (.05"?) 2 full turns (.09") and 3 full turns (.125") What profiles give nearly stoichiometric or a little leaner at 5-10 in vacuum 14.5 F/A is 0% CO (by heathkit) 13.1 F/A is 4% CO 12.4 F/A is 6% CO What CO and O2 readings give most power at full throttle What profiles give the most power Where on needle is 3500-4000 rpm at cruise (5-10in vac?) Where on needle is full throttle at 2000, 3000, 4000 RPM How does race gas change mixture? reprofile needle tune for power Test for transient pinging What F/A ratio stops pinging? What mixture oil in carb? If having problems try tightening intake valves to .012" Put two gallons of race gas in and get runs with the small blower pulley