XJ Stroker 4.7L

[98XJ_Limited]

Hey Guys,

Im looking at putting a stroked 4.7L motor in my xj when i start my build. I have done some reading and Jeep Engines Australia seem to have a good rep when it comes to the XJ motor.

I have also read that mopar do a 4.7L as well. Has anyone heard of these or used any of them personally?

Is there anything else I should be aware of before putting a stroker in?
Also are there other mods that should be done to areas such as the cooling system or changes to the gearbox and transfer case?

Thanks again..

[ozjeepster]

The Mopar 4.7 ltr is a v8 & as for cooling upgrades , just the usual tweaks you do for the 4.0 ltr should see you good .

[98XJ_Limited]

A. Long Blocks
Need more power and low-end torque out of your 1991-06 Jeep Wrangler or
Cherokee inline six-cylinder engine? Mopar's new 4.7L Stroker Long Block
engine assembly is the solution to beef up the Jeep 4.0L I-6 for towing,
offroading, or rock crawling.
1 P5155209 Block, Long, 4.7L Stroker, I6, 1991-97 Jeeps, 1998
Cherokee/Wrangler
1 P5155627 Block, Long, 4.7L Stroker, I6, 1999-04 Grand Cherokee,
2000-06 Wrangler
1 P5155210 Block, Long, 4.7L Stroker, I6, 2000-01 Cherokee

This is the Mopar engine I found on their website.

[Windex]

When and if my engine finally dies I think I will go down this path, I spoke with the guys at Jeep Engines Aus and they were incredibly helpful and even managed to share a few details that allowed me to confirm that they would run fine on LPG. I would definitely be using them to source the long block as I have already read very positive things about them.

[XJweaver]

You may be waiting a long while Windex - By all acounts the motor on the XJ appears to be the last thing to go.

Paul.

[Easy Rollins 1]

Any ideas on cost?

Will the factory injection handle it?

[Windex]

Originally Posted by Easy Rollins 1

Any ideas on cost?

Will the factory injection handle it?

From the discussions I had with them the factory computer continues to run everything but the injectors are upgraded to give higher fuel delivery. The cost for the long block was close to $5,000.