Reply With QuoteIt's getting closer. I received this video from Robbie today. It's the first test start.
https://youtu.be/vmHVPUe38c0
Very well stated... I have nothing to add to justify my decision.Originally Posted by gbaumann
To the other questions:
Power: I'm not sure what kind of power I'll have at the wheels but I picked up the 430hp crate LS3, so even if conditions are not completely optimal, it should make over 400hp/400tq. Additionally, the 6L80E is a very efficient, low-loss transmission. The transfer case is a stock jk unit with a modified input shaft, so from that point back, the parasitic loss will be the same as any other jeep. Regardless of the peak power, this motor has a great power curve and it uses stock tuning. It will be smooth as silk whether its 5 degrees or 105 degree outside and the shifting will be as good as any stock Chevrolet.
Fuel Economy: The LS swapped jeeps have been reporting better than stock fuel economy (if you can keep your foot out of it). I suspect this is because of the extra gear (.67 high gear ratio) and the fact that the engine makes great torque lower in the rpm range. It stays out of the PE mode, which keeps the fuel mixture leaner. However, we drive bricks, so it will never compete with the Prius.
Brakes: I have the teraflex big rotor kit, but the overall weight shouldn't be much more that what I'm pulling out. The pentastar/W5A580 are lighter than the LS3/6L80, but the sprintex supercharger added a fair amount of weight. Weight is one area where the LS motors do very well. I'm having 35x12.50r17s mounted while it's at Robbie's shop, so we'll see how the brakes perform. The big rotor kit was designed to combat extra weight and larger tires up to 35".
Hope those answers are helpful.
It's getting closer. I received this video from Robbie today. It's the first test start.
https://youtu.be/vmHVPUe38c0
Super incredible change. The tranny goes too? is the new one an 8 speed?
Yep... The trans is now a 6L80E. It's a 6 speed. Here's the ratio:
1st - 4.02
2nd - 2.36
3rd - 1.53
4th - 1.15
5th - 0.85
6th - 0.67
do people say "boss" anymore? The LS swap is "BOSS".
It's about ready to come home... Here's the latest from MoTech.
https://youtu.be/CpwuFaJTwBM
Ive been hemming and hawing about a power mod forever. I think i may just skip it all and go LS.
It's been a while since the last update. The LS3 is amazing. Lots of power, smooth delivery, and the mileage hasn't been terrible. It's been 15-18 mpg, but I have 35's and 4:10 gears. I'm much happier than I was with the Sprintex. I think the Sprintex would have been a better option if my Rubicon was a manual. The 6L80 trans I've got now is wonderful: smooth and predictable. Here's a couple pics:
you have to change that sticker. the "rubicon" decal has to go.
maybe MOBICON (motech)?
Hows this swap going? any engine codes?
Posting Permissions
Connect With Us