For comparison purposes
the information below came from a
full throttle run on a
1995 Magnum 5.9V8 Ram pickup
with the factory stock OBD-I PCM computer
******
Made the 'record' feature of the Actron ScanTool
with OBD-I Chrysler Cartridge.

This records and stores 5 readings,
3 seconds apart,
of what happened with the
PCM computer sensors before you hit the button, and an additional 10 readings
3 seconds apart afterwards

Here is what the ScanTool recorded on some runs at full throttle in 2nd gear
up a pretty steep hill
{ I guess about 4% grade)
Outside temperature was in the 70's and the barometric pressure was 29.6 inches Hg.
447 feet above sea level.

MPH....RPM......SparkAdv.....Vacuum....O2 voltsDC

40......2804.......19..........0.9..........0.86
48......3175.......19..........1.1..........0.90
54......3485.......18..........1.2..........0.90
60......3787.......21..........1.5..........0.90
65......4093.......24..........1.6..........0.90
71......4471.......24..........1.7..........0.92
76......4785.......28..........1.7..........0.90
80......5040.......28..........1.8..........0.90

This was with gasoline that was about
89 octane,
back in the days when there was no ethanol being added.

No pinging was heard during the run.

On this same hill
on hot 90 degrees days
with 87 octane gasoline
pinging could be heard
beginning around 3500 to 3800 rpm