33" GY Duratracs = Big loss of highway power
04-26-2010, 12:46 PM
#12
JK Junkie
I put on 33" duratracs too. I lost SOME power, but I can still fly on the highway. Yeah, I have to downshift at times, but I cruise on flat highways at 75 mph in 6th gear running about 1,900 rpm (I think..) I think its just fine for now. I do plan on getting 4.56 gears when I move up to 35s, so I can keep my highway mileage good.
I ran a little test and running hilly highways leaving it in 5th nets me about .3 extra mpg, say opposed to shifting back and forth b/w 5th and 6th.
EDIT: my jeep runs a catback and intake and even when stock, it made a BIG difference in highway power. I also do not run a back seat in my Jeep, so its like 50 lbs lighter.
I ran a little test and running hilly highways leaving it in 5th nets me about .3 extra mpg, say opposed to shifting back and forth b/w 5th and 6th.
EDIT: my jeep runs a catback and intake and even when stock, it made a BIG difference in highway power. I also do not run a back seat in my Jeep, so its like 50 lbs lighter.
04-26-2010, 01:08 PM
#13
I guess being at Sea level and on flat ground makes the 35's and 4.10's good for me.
(Just measured again 35" KM2's @ 10k 33-7/8"
)
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...Thanks again for understanding IcyFridge!
(Just measured again 35" KM2's @ 10k 33-7/8"
).
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...Thanks again for understanding IcyFridge!
04-26-2010, 01:21 PM
#14
JK Newbie
Join Date: Jan 2009
Location: fairfax,vt
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I thought all the auto transmissions came with 3.73 ? Standard tranny was 3.21 with 3.73 for tow package option??
Just reread i see it was a standard.
Just reread i see it was a standard.
Last edited by boggle; 04-26-2010 at 01:23 PM.