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Axle code is 01 (3.73) and the window sticker says 3.73 but its apparently a 4.11. 70 mph I'm turning 23-2400. My 95 is 1950rpm at 70. I try to stay at 2 when running down the highway for mileage. I'm planning on having this thing a long time. Should I change it out to a 3.73? I rarely pull anything and what I do pull a 6 cylinder could pull easily.
As compares with a few others I run 2025 RPM @ 70 MPH - 6spd 3.73.
If your axle tag says C1 (3.73) assuming AT and you are revving 2400, maybe you should log your torque converter slip.
I'm talking about the 01, its a C1 axle code. I also have a 95. My convertor may not be locking up. What EPA mods are your talking about? Thanks for all the help
I pull a fully loaded Circle J 4 horse with dressing room no problem over the divide - blowing Cummins away. 3.73's.
Whada ya want more than that?
Here's the reason I would have preferred the 4:10's. I have enough power to pull that 26k lb load faster than it should be pulled...that's not a question.
The reason is I prefer to tow 26k at a reasonable speed....60-65 mph. That puts the rpms around 2k. In my opinion there is a significant tendency lug and create high EGT. The 4:10 would give me a couple hundred rpm to offset that.
My 95 had 4:10's...didn't make near the power that my 01 does, but I felt it was more driveable at my preferred towing speed.
Here's the reason I would have preferred the 4:10's. I have enough power to pull that 26k lb load faster than it should be pulled...that's not a question.
The reason is I prefer to tow 26k at a reasonable speed....60-65 mph. That puts the rpms around 2k. In my opinion there is a significant tendency lug and create high EGT. The 4:10 would give me a couple hundred rpm to offset that.
My 95 had 4:10's...didn't make near the power that my 01 does, but I felt it was more driveable at my preferred towing speed.
Good point!
I don't mind 70 mph on typical flatland interstate hwy, definitely too fast for two lane or mountain roads - particularly downhills!
I have the 6spd, and prefer 18k-22k RPM for best MPG/power range. I tend to shift to achieve this.
I'm talking about the 01, its a C1 axle code. I also have a 95. My convertor may not be locking up. What EPA mods are your talking about? Thanks for all the help
EPA has forever forced manufacturers to meet constantly more restrictive standards. The electronic engine management of modern vehicles was not introduced to improve performance or durability, but to meet EPA expectations.
Many of the new designs and modifications manufacturers have come up with are prioritized to meet these arbitrary EPA edicts without reducing performance - maintenance and durability issues be damned.
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