Fastest 4.0 cherokee
Thread Starter
CF Veteran
Joined: Oct 2010
Posts: 1,000
Likes: 3
From: West By God Virginia
Year: 1999
Model: Cherokee (XJ)
Engine: 99 4.0
CF Veteran
Joined: Sep 2009
Posts: 6,322
Likes: 6
From: Summerville, Ga
Year: 1995
Model: Cherokee
Engine: 2.5 4 cyl.
Member
Joined: Apr 2012
Posts: 226
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From: Minnesota
Year: 2000
Model: Cherokee
Engine: 4.0l
::Regional Moderator::
Joined: Aug 2011
Posts: 4,742
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From: Jacksonville, NC
Year: 1993
Model: Cherokee
Engine: I6 4.0L HO
Originally Posted by mountaineerjeff
more like forum fail.
Or if the goal of this is trying to drag race an xj. Find a twin turbo supra and swamp the motor. And guess what an aw4 trans is an upgrade to the supra. So go ape ****.
CF Veteran
Joined: Sep 2009
Posts: 6,322
Likes: 6
From: Summerville, Ga
Year: 1995
Model: Cherokee
Engine: 2.5 4 cyl.
1. it WAS a 4.0. now its a 4.9 stroker (they did their numbers wrong 
)
2. It is in a jeep, just not in those pictures
3. Not exactly sure what your point is in this thread. If i recall correctly a guy called Bennie at Hesco made around 750 hp when he dyno'ed his "4.0"
)2. It is in a jeep, just not in those pictures
3. Not exactly sure what your point is in this thread. If i recall correctly a guy called Bennie at Hesco made around 750 hp when he dyno'ed his "4.0"
Last edited by xj_maniac_newb; Jul 16, 2012 at 12:56 PM.
Thread Starter
CF Veteran
Joined: Oct 2010
Posts: 1,000
Likes: 3
From: West By God Virginia
Year: 1999
Model: Cherokee (XJ)
Engine: 99 4.0
the point of this thread is in the title. I would like to know the fastest 1/4 and 1/8 times in a 4.0 cherokee.
if you have some actual times for other jeep I6s thats cool and would help the thread, but im looking for the fastest 4.0L/242in^3. especially those in a xj.
if you have some actual times for other jeep I6s thats cool and would help the thread, but im looking for the fastest 4.0L/242in^3. especially those in a xj.
Seasoned Member
Joined: Dec 2011
Posts: 307
Likes: 0
From: Texas
Year: 1997
Model: Cherokee
Engine: 4.0L Inline 6
Poor motor.
Banned
Joined: Jan 2012
Posts: 516
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From: Southern Cali
Year: 1986
Model: Cherokee
Engine: 2.5L turbo, 4.0L tb swap, ported head ect
Most power stock block? I believe goes to this man.
He posted better numbers than in the video on jeepstrokers.com! Believe it was 13#'s, head gasket pushed out, number 5 piston broke. Intake charge temps in the 200* or better range!
The 4.0s are good for about 8psi stock block, with a good air fuel controller. With no controller, or one that doesn't read boost, your looking at about 6psi. Water/Meth injection is guarnteed power on these 4.0's, because it will cool the intake charge considerably..which will help save the motor by fighting off detenation & make more power via colder air!
8psi, ported head with Ls1 valve train, & a tighter quench height would be awsome with 8psi and meth!
He posted better numbers than in the video on jeepstrokers.com! Believe it was 13#'s, head gasket pushed out, number 5 piston broke. Intake charge temps in the 200* or better range!
The 4.0s are good for about 8psi stock block, with a good air fuel controller. With no controller, or one that doesn't read boost, your looking at about 6psi. Water/Meth injection is guarnteed power on these 4.0's, because it will cool the intake charge considerably..which will help save the motor by fighting off detenation & make more power via colder air!
8psi, ported head with Ls1 valve train, & a tighter quench height would be awsome with 8psi and meth!
