MOTOWN
Member
Cell phones , iPads you know modern tech is a beautiful thing! I guess a good pissing match every now and then can be entertaining:cheesy::clap2:
Motech LS Swap Gremlins
- Thread starter SLO
- Start date
Cell phones , iPads you know modern tech is a beautiful thing! I guess a good pissing match every now and then can be entertaining:cheesy::clap2:
SLO
Member
Eddie, any regrets going with 5.38’s? I’m ordering gears today so Robbie can have them swapped out and can’t decide between 5.13 and 5.38. Mine is set up very similar to yours. Do you feel like it revs too high on the freeway over 70?
I have been driving my wife’s JL back home which has nothing more than 37’s and a 2.5” lift. I’m going back on all the same passes in the same heat and this thing is amazing. It’s making it hard to want to keep the JK and not get another JL to build.
Jkzinger
Caught the Bug
So what RPM are you turning at your usual 80mph freeway speeds? I am trying to decide on keeping my 5.38s when I get an LT put in.
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Exodus 4x4
New member
The 8 speed is going to give you different RPM’s than the 6 speed.
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Cheeseburger
New member
I have the 8 speed and 5.38’s. I would go with 5.13’s if I were to do it again.
You can use the grim reaper gear ratio calculator to see what your rpm will be at whatever speed you want.
http://www.grimmjeeper.com/gears.html
If i remember correctly I’m turning around 2,300 rpm at 70. It’s ok, but that’s high if you do a lot of highway cruising.
You can use the grim reaper gear ratio calculator to see what your rpm will be at whatever speed you want.
http://www.grimmjeeper.com/gears.html
If i remember correctly I’m turning around 2,300 rpm at 70. It’s ok, but that’s high if you do a lot of highway cruising.
SLO
Member
^ This. I drove a LT with a 8L90 and 5.38’s when I dropped mine off at Motech. It was on tons and 40’s and It threw you back in your seat in 1st through 4th. Didn’t get it above that. I would personally do 5.13’s with an LT in 40’s though.
Brute
Hooked
I wish I could get 2300 rpm at 70 mph in any of my jeeps...my two JK's with 5 speed autos here in WA are turning 2500 rpms with 4.88 & 39's (Hellcat) and 2900 rpm's with 5.38 & 40's (Brute)...
Sharkey
Word Ninja
It’s admittedly a different animal, but 2,300 at 70 is damn near what a 3.6 Pentastar does in a JKUR with stock gears (4.10) and 35’s. That’s nothing for the Pentastar and, if anything, I’d want lower gears (higher ratio).
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Exodus 4x4
New member
My 6.2 turns 2400 at 85, and that’s with 5.13’s and 40’s.
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RESURECTIONJK
Hooked
All this talk about 6.2’s and 8 speed transmissions and all I can think of is... I just want my 3.6 to stop sounding like an angry cricket tap dancing on firecrackers.
Ddays
Hooked
Just hook 'er up behind the motorhome and take it for a spin with it still in 4hi. That'll take care of that noise :thumb:
VeruGE*144
Caught the Bug
RESURECTIONJK
Hooked
Thought has crossed my mind. Especially since no sooner did I get a new motor from none other than SLO himself, I’m now having transmission issues!!! Go figure.
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SLO
Member
I have one of those down at Motech as well. [emoji16]
It’s yours if you want it!