Engine/Transmission (1994 - 1998) Max Torque at what RPM?

[danmcguire]

I have a 97' with 4 speed auto and a 3. 54:1 rear end. What is the ideal RPM in "D" or in O/D to produce the max torque? I can't not find any info in my owners manual that tells this information . I pull a 10,000# 5th wheel and would like to using the maximum torque "sweet spot" on my RMPs.

 

[Jeremiah]

Can't answer the question, but I'll others can. In the meantime, I'd stay out of OD unless you're on really flat ground.

 

[dseabaugh]

My truck is about the same setup and it would be around 1800 rpms at 65 and 2000 at 70 in overdrive. It just cruises easily at that speed with around that load. Takes a littl ework to get up to that speed, but then it just rolls.

 

[ndurbin]

My truck pulls real good from about 1500 to 2000 rpms. Once in lock-up I can really hammer down on it. Now getting to that point well it takes a bit. But like dseabough once I get up to crusing speed (usually about 65-70) I stay there unless it's a pretty good sized hill.



Nathan

 

[DavidGardner]

RPM for torque

I have 167,000 plus on mine and I try to keep arond 1850 rpm (65 mph in od. (locked up) to 70 mph. If in mountains watch the EGT guage and if it starts to get warm shift out of OD and get in the right lane and grind it out with all the others who are towing. If you are reaching high temps you will notice a temp drop as soon as you shift down and increase the rpm"s. My experience in the past 167,000 miles is if you keep it in the 1850 rpm range it pulls great. If you catch a slower vehicle and have to slow down then get in line and grind it out like the rest of them.

 

[DanielH]

I just looked on the TST Board, they show a torque curve. Peak torque is about 1600 RPM and it starts dropping off pretty fast at 2500 RPM. This is for stock or modified 180 HP engine. http://www.tstproducts.com/power_kits_trial.htm

 

[Vaughn MacKenzie]

Peak torque RPM may not necessarily be the best mileage RPM. Why? Because if you're pulling a load that requires higher RPM so you're in a higher horsepower band then that is where your best mileage would be. Vaughn