What should br the OD rpms be at 70 mpr on my 2004 chevy tahoe 4x4?

Asked by johnw44 Jan 07, 2016 at 08:24 PM about the 2004 Chevrolet Tahoe LS 4WD

Question type: General

At 70 mph my chevy Tahoe 2004 4x4 is tacking 2300 rpms. Is this proper or is my OD not working?

9 Answers

274,105

That all depends on what package you have on your Tahoe, the low geared differentials will have higher engine RPM's then a higher geared one, my Yukon is turning right at 2 grand at 70 but I have done some wheel and tire size changes and readjusted the sensors accordingly. if you have a light touch with the throttle on the highway you can feel it shift all 4 times, and if your real good you can also feel the torque converter lockup. HTH

4 people found this helpful.
375,235

Check your build sheet to see what the final drive ratio is.

2 people found this helpful.
52,155

I feel 2300 is acceptable. Count your gear shifts, there will be 4 gears (that means 3 changes). And there is torque converter lockup that happens after 45mph with low throttle. It can feel like a shift. Like they said though, looking up your build sheet or RPO codes will tell you your gear ratio. 3.08's will act very differently than 3.73's

3 people found this helpful.
Best Answer Mark helpful
375,235

I do like numbers, they don't lie.

2 people found this helpful.
274,105

Your in the ball park at those speeds, it all depends on the final drives gear ratio, tire and wheel size. If it was my rig I suspect that the lockup torque converter hadn't engaged, at 60 mph mines turning 1875 rpm, but I'm running a large tire and wheel 275/65/18, a lot bigger than stock, and some other mods.

10

I have a 2004 Tahoe Z 71 with 373 gears and the 2000 RPMs exactly my MPH 70 Verified with the GPS on cell phone. Hope it helps , Chevy Rules !

1 people found this helpful.

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