Hemi swap people.
JK Junkie
Joined: Feb 2011
Posts: 2,818
Likes: 3
From: Folsom, CA
An MDS Hemi will get 20MPG on the highway in a JK - My neighbor has one and he gets 19, so I see that claim as more than reasonable.
JK Junkie
Joined: Feb 2011
Posts: 2,818
Likes: 3
From: Folsom, CA
I do not recall seeing many numbers. You might get a little better with the 5.7, especially the VVT. If you drive it real easy.
Good luck with that.
I get about 3 mpg less with the 6.1/auto than the 3.8/stick got. Anywhere between 13 and 17 mpg on 93 octane. I do not have the willpower to drive it like a grandma, I admit.
My daily commute is about 16 miles. I don't really care about gas mileage.
Good luck with that.
I get about 3 mpg less with the 6.1/auto than the 3.8/stick got. Anywhere between 13 and 17 mpg on 93 octane. I do not have the willpower to drive it like a grandma, I admit.
My daily commute is about 16 miles. I don't really care about gas mileage.
Get near 3.8 stock mileage is outstanding since other mods only bring the factory mileage down.
JK Enthusiast
Joined: Feb 2011
Posts: 155
Likes: 0
From: Nevada
What kind of mileage are you getting? I do understand that the price of the swap will most likely never offset the cost of gas, I'm just looking for more range and more power. I've already got all the info for Ripp. Thanks!
Also anyone in SoCal had a swap done at Evo? About what did it cost?
Also anyone in SoCal had a swap done at Evo? About what did it cost?
JK Enthusiast
Joined: Feb 2011
Posts: 155
Likes: 0
From: Nevada
.....but the build time is killing me with anticipation....
I'm going with 5.38 gears on 40's.
JK Super Freak
Joined: Jul 2009
Posts: 1,457
Likes: 2
From: B.F.E, MI
I've done a lot of research on the hemi swap and never considered the 6.1 (always the 5.7). the 5.7 can use my existing Tranny and T-case (I have the 6-speed). Can the 6.1 do the same?
Get near 3.8 stock mileage is outstanding since other mods only bring the factory mileage down.
Get near 3.8 stock mileage is outstanding since other mods only bring the factory mileage down.
I understand using the stock T-case (at least for a while heh). But even if I could have used my stock 6 speed, I would not trust it to tolerate 400 HP. Reccommend something stronger.
I have got 17 mpg on mine on the highway as long as there is not lots of head wind. I find that acceptable, no worse than pickups I have had. By the time I need fuel, I also need to get out and stretch anyway.
Around the back roads 13-14 mpg behaving....sometimes 12. Little 90" wheelbase devil just too fun not to rev.
F*ck it, I am getting old. But I am not going quietly.
Last edited by Yankee; Sep 19, 2011 at 04:34 PM.
Thread Starter
JK Freak
Joined: Apr 2011
Posts: 572
Likes: 0
From: calabasas, ca
Haha, thanks for the info. I called EVO today and they said install is $3800+parts. Now all I need to do is find a source for engine/trans.......
P. S.
I can't wait to feel the pushed into the seat sensation again. (miss my 5.0)
P. S.
I can't wait to feel the pushed into the seat sensation again. (miss my 5.0)
JK Enthusiast
Joined: Feb 2011
Posts: 155
Likes: 0
From: Nevada
Apart from engine / trans / t-case, don't forget you also need the conversion kit which will run you from $4K to $6K depending on which one you choose. The $3.8K you mentioned is only labor.
JK Junkie
Joined: Mar 2009
Posts: 2,368
Likes: 0
From: Scottsdale, AZ