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Old 07-26-2011, 06:29 PM   #1
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Rpm

I'm new to RV I drive a class A gasser '98 Bounder and at about 65 mph I'm at about 2300 rpm my question is on hills on cruise it down shifts to about 3200 rpm till I crest the hill is this ok? When I'm not in cruise I usualy let off the gas as not to rev so high, is this right? Is 3200 for a couple of min. Ok? She only has 36000 mi. What do you other gassers do Rpm wise?
Thanks John
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Old 07-26-2011, 07:21 PM   #2
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It's a gasser with a 4 speed auto tranny. Your RPM's sound about right to me. You should be cruising at around 2000 RPM's at about 60 MPH.

Expect it to downshift going up the hills. Higher RPM's going up the hills gives you more power and cooling. This is a good thing.
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Old 07-26-2011, 08:31 PM   #3
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I don't see a problem with what you describe. mine does the same thing to maintain speed going up some of the steeper hills. If I'm towing the toad I put the transmission into towing mode and as I build speed on the downhill side of the hill the transmission downshifts to help with braking.
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Old 07-26-2011, 10:05 PM   #4
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Your engine is fully capable of 3200 RPMs and much more. If it's a Ford V10, it doesn't even produce its full rated horsepower until around 4700 RPMs. If a GM 8.1L V8, it's around 4200 RPMs.
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Old 07-26-2011, 10:15 PM   #5
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I have the Workhorse with 8.1 Vortec. Even though the Vortec will rev much higher, I have a self imposed redline of 4k rpm. 3200 rpm isn't even working hard.
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Old 07-27-2011, 01:13 AM   #6
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The 2003 8.1 has maximum torque @ 3200 and mine feels plenty comfortable at 3700 up hill. 4200 is max horse power. Fully loaded it is very hard to keep mine @ 3200 down hill on a 7% grade----she revs more than that and I would wear out the brakes if I fought it too much---or went to 1st/2nd gear.

The worst thing to do is lug the engine----you need some revs.
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