05-14-2021, 10:19 AM
This is from the Cummins ISM brochure;
"The engine delivers outstanding performance in the 1200-
1800 rpm range. For an optimal balance between performance
and fuel economy gear to cruise in the 1525-1625 RPM range."
"The engine delivers outstanding performance in the 1200-
1800 rpm range. For an optimal balance between performance
and fuel economy gear to cruise in the 1525-1625 RPM range."
Jon & Chris Everton
1986 40' Dog House #86
450 hp ISM 5 spd ZF Ecomat 2
2004 Range Rover L322 Toad