Hi all
im just curious , my JK is a sahara .
I used to own a HEMI GC and i really miss the V8 power , wich makes me wonder , what are the parts needed to put a HEMI in my JK , ive seen the AEV kit wich sounds great , but will my stock axles handle that V8 power ?
My JK is an 2010 6-speed sahara

 

The ZJ had a 5.2L 318 in it and a 5.9 360 in it with D35 or D44 rear axle and a front low pinion D30 front. The WJ grand cherokee had a 4.7L with more hp and torque than the stock 5.9 with the same axles as the ZJ.

Unless you are bouncing off rocks or running big tires you are fine.

You should have a rear D44 and a front high pinion D30 under your JK which is a stronger set up than what came on the Zj/WJ.

The wk's front axle I'm not sure what it was, probably similar in strength.

 

Should hold up with the stock tire size as long as you do not do hard launches from a dead stop with the traction control on. By turning it off, it will not launch as hard, you will break traction first.

I changed the oil on the dana 44's and the teeth looked new after 34k miles (20k hemi miles). My ball joints are slowly going and front axle ujoints are starting to bind some, probably would have gave out with the stock 3.8 (rough roads, Michigan salt, and freakin cheap non-greasable parts).

You need to be real careful in 4-lo, you could break stuff with no effort at all. I have found though that I just do not need 4-lo anywhere near as much as I did with the 3.8.

Just don't beat the hell out of it (very often) and it should be okay.

All that said, we do not have very many rocks to climb around here. If you do that, you will need to fabricate an oil pan skid, at least I have not found an aftermarket one.

 

Well , no more than 35" tires in mind
And with gussets and sleeves for the front axle , and just sands in here to play with , not much rocks , i think ill be just fine.
I dont think ill need 4low in an auto V8.

 

Also , ive seen many hemi jks with the aev hood
Is there any overheating problems or any other drawbacks ?
Its hot in kuwait and i dont want to park it all summer cuz its a hemi jk
Im not going to use it as a DD but how good is it as a DD ?

 

As a daily driver is where the hemi shines. The only reason to put one in is for more power on the street. For me it has always been about effortless acceleration. The 3.8 is fine for crawling. just use 4-lo. The power is fun in the sand too, but if I was doing dunes very much, I would just get a street legal sand rail/dune buggy, a bunch lighter and a lot cheaper.

It only gets in the low 90's here at the most. While my engine never overheats even crawling, the under hood temps are not good when your driving slow in the heat. The last two years I have worried about the under hood electronics. Some hemi owners have reported overheating problems climbing long grades in the mountains.

For that reason I am about to have a custom cowl induction hood built, with some heat reduction ventilation.