4.0 to 4.7 target

[Jgr.jeeper]

I have a 4.0 out of a ZJ Cherokee and I plan to stroke it to 4.7, with those ZJ blocks and heads, what should I look out for and how would I do it with a budget? I have it down to the crank right now and will look for a 4.2 3727 crank if ya'll could help me find one at a good price. I saw you can use stock rods with a .0030 over bore and that will get me to my mark. I'm hoping to not spend to much here so i can splurge a little on a nice cam.

[Cheromaniac]

Here are two recipes for you to choose from,:

4.6L low-buck stroker

Jeep 4.2L 3.895" stroke crank
Jeep 4.0L 6.125" rods
Custom forged +0.030" bore pistons, compression height 1.380", dish volume 18cc
9.6:1 CR
CompCams 68-231-4 206/214 degree camshaft
Russ Pottenger ported HO 2.00"/1.55" 62cc cylinder head
Mopar/Victor 0.043" head gasket
0.043" quench height
Ford 24lb/hr injectors for '96-'04 engines
268hp @ 4900rpm, 326lbft @ 3500rpm

4.7L medium-buck stroker

Jeep 4.2L 3.895" stroke crank
Jeep 4.0L 6.125" rods
Custom forged +0.060" bore pistons, compression height 1.380", dish volume 15cc
10.2:1 CR
CompCams 68-235-4 210/218 degree camshaft
Russ Pottenger ported Edelbrock 60cc aluminum cylinder head
Mopar/Victor 0.043" head gasket
0.043" quench height
Flometrics F&B 68mm billet TB
Bosch 0280155784 injectors for '96-'04 engines
290hp @ 5100rpm, 340lbft @ 3700rpm

[mpgMike]

You didn't mention what year the block is. There were changes for the 1996 model year. Secondly, you didn't mention what you want to put it into. There are compatibility issues with motor mounts, power steering brackets, and other issues depending. Want to elaborate?

[Jgr.jeeper]

The block is from 98' and I'm putting it in a 97' wrangler

[mpgMike]

That should be just fine.

[amcinstaller]

I had two different 0630 heads (one 97 and one 98), one had the little 1/8 port into coolant at the back, one didn't. Also, there was a bolt hole front passenger side that was not present on one. I drilled and tapped the port but the bolt was inconsequential for me, might be another thing to check.

[mpgMike]

The coolant port at the back of the head is for a coolant temp sensor dedicated for the gauge. I thought that was eliminated starting the '96 model year. You may have an older head. No clue on the extra bolt boss.