I havent started a build thread so I figured this might as well be the time. I have a 02 WJ with the standard 4.7 engine and factory select trac 242HD transfer case, then added the vari-lok diffs front and rear and regeared to 4.10s. The previous owner never changed the oil apparently and I lost part of the timing chain tensioner and started to spin some rod bearings. I didnt discover all the sludge until tearing the block down.
Anyways I got the block back from the machine shop this week and thought Id post some photos. I decided to build up this 4.7 to be better than the 4.7 HO even.
My block was okay but had to be decked 0.007 to square it up so im pretty worried about the compression ratio as its about 10.6 to 1 on paper. I probably will have to order some custom cometic thicker head gaskets. I also had to have the rod journals on the crank turned .5 mm (0.020") to clean up the spun bearings. I also had the heads gone through and installed new guides, seals, and did a valve job.
Here is what I have bought to put into it.
Ross 9cc Dome Forged aluminum Pistons with floating wrist pins
Factory rods honed for floating wristpins
Comp Cams 26113-16 valve springs
Mopar 4.7 HO camshafts
Total Seal Gapless Piston Rings
Clevite 77 rod and main bearings
2008 4.7 Factory Intake Manifold
Hopefully I can get this done in a week or so as time is hard to find right now. Talking to the guys over at airram I should be able to get about 270 hp at the wheels with this setup. I was figuring about 325 or so at the flywheel so this seems about right.