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Old 11-09-2010, 07:02 PM   #1
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My buddy bought a jeep from his brother and immediately went and had the transmission rebuilt because it was not working. He got the jeep back but it seems as if there is no overdrive. 50mph at 2500 rmps? He asked his brother about it and he told him they are only 3 speed. Is this correct? I drove it today and was doing around 60 @ 3000 rmps. Almost forgot 01 4.0 a/t

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Old 11-09-2010, 07:06 PM   #2
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Depends on the year. My '01 is a 3 speed with no o/d, 3:07 gears and does 55mph all day long at 1500 rpm, but I run 33's.....

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Old 11-09-2010, 07:15 PM   #3
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This one has 33's but I'm not positive about the gears. I'm sure they are stock like urs though. I just drove it and manually ran it through all gears and it shifts every time I shift it.
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Old 11-09-2010, 07:51 PM   #4
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The 32rh 3spd auto is an awesome transmission. 1:1 ratio in third gear, no overdrive, lockup torque converter. Keep it cool and out of deep water and it will last a looooong time. I have 33s and 3.07s and run the same RPMs as Inferno. If I had to guess with 3000rpm at 60mph, you have 4.56s. Jack up the rear and spin the tires. Count the driveshaft revolutions with one revolution of the rear tires. 1 tire revolution to about 4 1/2 driveshaft revolutions would be 4.56s. Almost 5 driveshaft revolutions would be 4.88s, etc., etc. I dont think that you have stock gearing though.
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Old 11-09-2010, 07:54 PM   #5
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The 32rh 3spd auto is an awesome transmission. 1:1 ratio in third gear, no overdrive, lockup torque converter. Keep it cool and out of deep water and it will last a looooong time.
X2 on all that. In fact, I converted my '97 TJ from a 5-speed to the 32RH automatic transmission which is especially suitable for some darned hard core wheeling. It's an awesome nearly bulletproof transmission. I LOVED mine (until that Jeep was stolen in March).

The 3-speed stayed with the TJ through 2002, it was replaced by a "less bulletproof" 4-speed automatic known as the 42RLE.
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Old 11-09-2010, 07:59 PM   #6
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Originally Posted by fire239
The 32rh 3spd auto is an awesome transmission. 1:1 ratio in third gear, no overdrive, lockup torque converter. Keep it cool and out of deep water and it will last a looooong time. I have 33s and 3.07s and run the same RPMs as Inferno. If I had to guess with 3000rpm at 60mph, you have 4.56s. Jack up the rear and spin the tires. Count the driveshaft revolutions with one revolution of the rear tires. 1 tire revolution to about 4 1/2 driveshaft revolutions would be 4.56s. Almost 5 driveshaft revolutions would be 4.88s, etc., etc. I dont think that you have stock gearing though.
Well the reason the tranny was rebuilt was because it sat in 4foot of salt water for 4 hours. I really don't think it has 4:56 gears but man I could be wrong. Could it be possible that the guy who rebuilt the transmission didn't do something right?
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Old 11-09-2010, 08:06 PM   #7
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My '01 on 32s with 3.73 gears shows about the same numbers on the tach... But not 3000 at 60 more like 75 at 3000... You may have 3.73 gears, which are also stock for the 01. If you have the 3.73 stock gears that also means you have a D44 rear end, which is a plus!
Check for a metal tag on the rear differential that has the ratio stamped on it. Something does seem out of whack though cuz even though they do run higher, it shouldn't be running that high...
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Old 11-09-2010, 11:13 PM   #8
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My '01 on 32s with 3.73 gears shows about the same numbers on the tach... But not 3000 at 60 more like 75 at 3000... You may have 3.73 gears, which are also stock for the 01. If you have the 3.73 stock gears that also means you have a D44 rear end, which is a plus!
Check for a metal tag on the rear differential that has the ratio stamped on it. Something does seem out of whack though cuz even though they do run higher, it shouldn't be running that high...
A Jeep with larger tires (33 vs 32) will run less RPMs at the same speed with the same gearing. If you are at 3000 at 75, he could be 2800-2900 at 75, for example. 3000 at 60 MPH is REALLY crankin the RPMs with 33s. 3.73 also came stock in the D35s.
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Old 11-09-2010, 11:34 PM   #9
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A Jeep with larger tires (33 vs 32) will run less RPMs at the same speed with the same gearing. If you are at 3000 at 75, he could be 2800-2900 at 75, for example. 3000 at 60 MPH is REALLY crankin the RPMs with 33s. 3.73 also came stock in the D35s.
I didn't know that 3.73 was stock for the d35s.... thanks
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Old 11-09-2010, 11:38 PM   #10
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Here ya go.......

Axle Gear Ratios

3.07 - 1997-2006
* Standard ratio used with 6 cyl models except the Rubicon

3.55 - 1997 only
* Optional ratio used with 6 cyl manual only

3.73 - 1998-2006
* Optional ratio used with 6 cyl manual and automatic except the Rubicon
* Standard ratio used with most 4 cyl automatics
* Standard ratio used with 4 cyl 6 speed
* Standard ratio used with Dana 44 rear axle except the Rubicon

4.10 / 4.11 - 1997-2006
* Standard ratio used with 4 cyl 5 speed manual
* Standard ratio used with Rubicon

4.56 - 2003-2006
* Optional ratio used with 4 cyl automatic
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Old 11-09-2010, 11:42 PM   #11
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Neat!

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