L30 / L31 "base engine friction torque vs rpm vs vacuum" table

[Hog]

Hmmm... I'd like to meet the guy who's job was to motor an L31 to 8000 rpm to measure friction torque. ;)


The ultimate goal here was to try and develop a model for the 3" stroke engine in my Suburban. It seemed so simple in the beginning...

Well we know they didnt use a "blackbox" PCM to rev that high with the L31.

3" stroke ehh, to bad we couldnt get the data for a 94-96 L99 4.3 GEN 2 engine as it uses the 3" stroke crank.

peace
Hog

[Fast355]

Well we know they didnt use a "blackbox" PCM to rev that high with the L31.

3" stroke ehh, to bad we couldnt get the data for a 94-96 L99 4.3 GEN 2 engine as it uses the 3" stroke crank.

peace
Hog

Pauly,

Have a better plan to investigate. Someone find me a HP Tuners .bin file for the same year 4.8 and 5.3 trucks and I will have a peak. Those two engines are identical minus the crankshaft and rods.