Top End 4.0 4-speed auto - JeepForum.com

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post #1 of 36 Old 09-26-2011, 03:18 PM Thread Starter
Bradman96
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Top End 4.0 4-speed auto

Anyone know the top speed one can go with a stock 4.0 Grand Cherokee, 4-speed automatic? Rather not get a speeding ticket just to find out

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post #2 of 36 Old 09-26-2011, 03:59 PM
rooster51
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97mph, iirc.
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post #3 of 36 Old 09-26-2011, 04:07 PM
csouers
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That seems awful low. I would think more in the range of 100. I got my 20 year old 400,000 mile 4.0 xj past the needle, (85) and my 5.9 easily past 90 (stopped because I had a nasty vibe. I'm sure she has more in her).

1998 Bright Platinum ZJ 5.9 Limited - 5.9l, 46RE, NV-242, D30/44a (Trac-Loc) w/3.73s - The DD
1999 White XJ Sport - 4.0l, AW4, NP-231, D30/8.25 w/3.55s - The Rig

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post #4 of 36 Old 09-26-2011, 04:35 PM
JrMechanic
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I've had my 4.0 pegged at 100.

Want to swap an NP242 or NP231 into your ZJ? Here's how:
http://www.jeepforum.com/forum/f13/n...pdated-685644/
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post #5 of 36 Old 09-26-2011, 05:02 PM
somebody5788
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I've not been able to get over 97. Petal to the floor just didn't have anything more to give. My friend actually took a picture haha

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1994 Jeep ZJ - RC Long Arms | RE 4.5" springs | Bilstein 5100's | RE SS brake lines | Falken 31x10.5-15 tires | Flatland 4x4 bumpers | Summit Soft 8's 15x8 3.75 BS wheels
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post #6 of 36 Old 09-26-2011, 07:44 PM
XJ90
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my jeep has easily done 120...
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post #7 of 36 Old 09-26-2011, 08:03 PM
General_Jeep
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Quote:
Originally Posted by XJ90 View Post
my jeep has easily done 120...
Ditto, Though mine has the 5.2L...

1994 Jeep Grand Cherokee 5.2L V8- NV3500 - Blown D35 8.8 replacement some day.
2010 Jeep Patriot 5 speed manual-- DD, 27-31MPG :D
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post #8 of 36 Old 09-26-2011, 08:11 PM
XJ90
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well i let out at 120 to let my brother catch up in his honda
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post #9 of 36 Old 09-26-2011, 08:38 PM
Candymancan
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Not sure how far the 4.0 can go i havent tried, but managed to get to 120mph on my 5.9

2013 6.2 V8 Camaro SS 30k
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98 4.0 I6 ZJ 240k
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post #10 of 36 Old 09-26-2011, 08:41 PM
ssands85
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Had my 95 doing at least 110. 42-RE, 4-slow and all. That's with 3.55's and stock sized tires.
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post #11 of 36 Old 09-26-2011, 09:31 PM
JrMechanic
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To the two posters that said they had their '94 and '95 4.0's going 110 and 120...

You're full of crap. My slightly modified 4.0 with 3.73's will touch 100, then shift into overdrive and DROP speed. No overdrive puts the RPM's way too high up to pull any harder and will hit the rev limiter.

Not to mention, it takes a good long stretch of road to hit 100 in a 4.0, 80-100 is like waiting on a woman to get ready. Oh, and the speedometer only goes up to 100 anyways.

Want to swap an NP242 or NP231 into your ZJ? Here's how:
http://www.jeepforum.com/forum/f13/n...pdated-685644/
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post #12 of 36 Old 09-26-2011, 09:58 PM
XJ90
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u can say full of crap all u want, but my zj has done it. and i have a good friend who's 93 zj v8 did it as well. clocked by a sheriff. yes the sheriff is a friend.
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post #13 of 36 Old 09-26-2011, 10:03 PM
XJ90
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my jeep has 3.73's as well, with a locker, running 255/70-15
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post #14 of 36 Old 09-26-2011, 10:09 PM
Falkon
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Quote:
Originally Posted by Candymancan View Post
Not sure how far the 4.0 can go i havent tried, but managed to get to 120mph on my 5.9
And you think this is smart? It's a JEEP, not a sports car. This kind of thread just incites people who believe this BS to try something foolish and dangerous.
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post #15 of 36 Old 09-26-2011, 10:12 PM
Finallyajeep
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Check this out. Lots of people posted their top speeds etc..

http://www.jeepforum.com/forum/f180/...-speed-635829/

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