Duramax is king of the mountain again
Clicky
Forum Discussion
Never worried about how fast I was up a freeway grade. Always got to the top of them.....
It was them local 20+% grades the effed me over. First with an 89 R3500, one of the one ton duallys with 4.10s BB auto...... an 81 C2500 with a 292 I6 and muncie 4 sp went up the 20% grade at 12K lbs total. R3500 sat at the bottom of the hill and blew up a TH400. First of 3 in 100K miles.....
Even my 96 6.5td could out pull my 05 Dmax dually on a steep grade by 5+%. Dmax stalled out at 20K in the low 20+ range, 6.5 did 30% at 20K. manual behind the 6.5 along with 4.10s, auto and 3.73s behind the Dmax.
Double the HP and Torque in both applications did not over power low gears in axel along with double the low gear in the trans. Even my IDI 7.3 in my Navistar can out do all the above due to a 10.08 first gear, 4.33's in the pumpkin! 30K up a 30% grade!
But, The dmax and 454 were first up the freeway grades! yep, but never made it to the job site or campground, because they stalled out before getting their! Does not do much good if you can not make the last 1.4 mile to where you are going is too steep! MY 02 on the HP torque wars.....How about some better geared rigs in both the trans and RE's!
Marty
It was them local 20+% grades the effed me over. First with an 89 R3500, one of the one ton duallys with 4.10s BB auto...... an 81 C2500 with a 292 I6 and muncie 4 sp went up the 20% grade at 12K lbs total. R3500 sat at the bottom of the hill and blew up a TH400. First of 3 in 100K miles.....
Even my 96 6.5td could out pull my 05 Dmax dually on a steep grade by 5+%. Dmax stalled out at 20K in the low 20+ range, 6.5 did 30% at 20K. manual behind the 6.5 along with 4.10s, auto and 3.73s behind the Dmax.
Double the HP and Torque in both applications did not over power low gears in axel along with double the low gear in the trans. Even my IDI 7.3 in my Navistar can out do all the above due to a 10.08 first gear, 4.33's in the pumpkin! 30K up a 30% grade!
But, The dmax and 454 were first up the freeway grades! yep, but never made it to the job site or campground, because they stalled out before getting their! Does not do much good if you can not make the last 1.4 mile to where you are going is too steep! MY 02 on the HP torque wars.....How about some better geared rigs in both the trans and RE's!
Marty
