Towing in 3rd gear on a 1300 mile trip
I have a 1997 GMC k1500 Z71 5.7 liter with 20000 miles and a 4L60e transmission with only 2000 miles, I will be towing a 3000# dry weight TT from Louisiana to Colorado. I plan on breaking the trip int...
Forum Discussion
For kicks and giggles. Here my C2500 350 rpm at 60, running at around 14000-14500 lbs total.yesterday.......
In directionality.4.10 gears, 2600 t.v. locked, 3000 unlocked
In OD, final ratio 3.08, 1900.
Assuming OP has typical 3.42 or 373 gears, they will be about 2200 3rd direct or 2400. I did level reasonably in OD. But it did.shift into.direct on grades above 2-3%. I would assume a 3.42 geared rig would shift sooner yet.
As.noted.by many, if the.trans is shifting gears lot, or unlocking and locking TC, probably better to shift lever down. Be it od to direct, or direct into 2nd on steeper free at grades etc.
Marty
In directionality.4.10 gears, 2600 t.v. locked, 3000 unlocked
In OD, final ratio 3.08, 1900.
Assuming OP has typical 3.42 or 373 gears, they will be about 2200 3rd direct or 2400. I did level reasonably in OD. But it did.shift into.direct on grades above 2-3%. I would assume a 3.42 geared rig would shift sooner yet.
As.noted.by many, if the.trans is shifting gears lot, or unlocking and locking TC, probably better to shift lever down. Be it od to direct, or direct into 2nd on steeper free at grades etc.
Marty
