My research has found the HO engine uses a slightly higher flow rate that the standard 4.7. I found out the regular 4.7 uses 22.5 LB/HR injectors, my Jeep 4.7 HO VIN "J" uses 25.8 LB/HR. I'm spending a pile of cash on my 2004 WJ with an HO engine that puked a valve seat. I want everything on the new engine NEW. Sort by Oldest first.
Has done so since new. As far as I'm concerned, you're right on the money. 2004 Jeep Overland WJ 4.7 H.O. (Bought new in Oct 2003) 2014 Jeep Overland WK2 5.7 Hemi (Bought used in 2016 w/7k miles) 1970 Ford Mustang Boss 302 (in Family since 1974) 2013 Ford Mustang Boss 302. 2011 BMW 328i. Reply Like.
205 posts 路 Joined 2006. #6 路 Feb 20, 2013. Nope the 4.7 has a 500k + bottom end with regular oil changes. Now the top end with aluminum heads is just like every other engine with aluminum heads, overheat it and you will have a top end break down. The 4.0 is great in a wrangler or a XJ but not enough power for the WJ if you really use it as a QuadraTokn Discussion starter 路 Jun 24, 2011. WJ 4.7 to 4.0 drivetrain swap PROJECT. I turned a 2001 Limited w/ a 4.7 into to a 1999 4.0 Limited/Laredo. The '01 is a really clean Jeep w/ 160k miles on it. All of the oil leaked out so the motor was junk. 43 posts 路 Joined 2011. #10 路 Feb 16, 2012. Everywhere I have looked has. (4.7L) Mopar庐P/N SPRC12MCC4, 0.040 gap (this is Champion RC12MCC4 #439) CAUTION: The standard 4.7L engine uses copper core ground electrode spark plugs, they must be replaced with the same type/number spark plug as the original. P. Powerofbabel Discussion starter. 25 posts 路 Joined 2014. #4 路 Feb 24, 2015. Yes it is a v8 4.7 2004, inspected in NY. This is actually my 2nd attempt at getting rid of p0420. First I changed the y pipe with this one: Then I got the code again so I replaced all the 02 sensors. About 40 miles later the code came back. Another thing you need to look at is Curb weight.. the WJ overland weighs almost 500lbs more than the ZJ 5.9l, And the smaller displacement 4.7l v8 doesnt achieve its peak torque until up higher in the powerband, that is why the 5.9 is quicker from a stop, here are some quick comparisons Model weight torque hp overland 4355lb 325@3600rpm 265 IKRbD.
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    • jeep grand cherokee wj 4.7 ho overland