Forum Discussion
APT
Apr 10, 2014Explorer
Ecoboost offers an even better than Ecodiesel torque curve (90% of it's 420 lb-ft peak from 1700rpm to 5000rpm vs. 90% from 1500-3000rpm). The fuel economy is worse than the Ecodiesel though. Not sure what that has to do with HD trucks.
jim summers, today's 6-spd trans offers a pretty tall 6th gear (0.67:1). 6th gear with 4.56 axle would be very close to GM's HD 4-spd 4th (0.75:1) and 4.10. The 2015 HDs have not been in consumers driveways long (a month?), but my 2011 6.0L/3.73 gets 14mpg mixed, up to 18mph highway non towing.
jim summers, today's 6-spd trans offers a pretty tall 6th gear (0.67:1). 6th gear with 4.56 axle would be very close to GM's HD 4-spd 4th (0.75:1) and 4.10. The 2015 HDs have not been in consumers driveways long (a month?), but my 2011 6.0L/3.73 gets 14mpg mixed, up to 18mph highway non towing.
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