- Feb 11, 2014
- 163
I'm running 32's at the moment right now I'm just wondering if the 3.42s would be alright if i went to a wider 33 or would i need to go to 3.73's?
33's with 3.42's?
- Thread starter PapaBear229
- Start date
Blckshdw
Moderator
- Feb 11, 2014
- 163
Just over all performance. Making sure even though its just an extra inch the gears could handle it.
djthumper
Administrator
Honestly this has been covered on ORTB numerous times and I believe in general everyone recommends staying at 32s on the 3.42 due to excessive heat on the transmission without it locking. We have the power in the engine but then you lose torque.
- Feb 11, 2014
- 163
djthumper said:
Would a tranny cooler counteract this or should i just save and get a junkyard rear end and front diff in 3.73?
djthumper
Administrator
PapaBear229 said:
Changing in the gears will do you better. If you go up to 3.73 why not just go up to 4.10s? Changing the gears you will also want to retune the PCM to adjust for the new gears and tire sizes.
jrSS
Member
- Dec 4, 2011
- 3,950
Only thing bad about 4.10's is that the rpms are up there when cruising highway speeds. Well and gas mileage
- Feb 11, 2014
- 163
I just really don't need 4.10s I still want decent gas mileage, I don't tow much, the occasional fourwheeler, and don't intend on surpassing 33's and I also planned on a PCMforLess tune after the change if I do it.
djthumper
Administrator
- Feb 11, 2014
- 163
Pittdawg
Member
- Dec 5, 2011
- 538
I went to 4.10s and only run 30.6 inch tires. The added performance is quite noticeable and I only lost approximately 1 mpg in mixed driving. I do plan on going to a larger tire either via spacers or new rims. I can't imagine lugging around 32's or larger with 3.42's 
HARDTRAILZ
Moderator
- Nov 18, 2011
- 49,665
Lifted 4.10s improved my mpg and 70 mph is 2000 rpm w 35s and was not much higher w 33s.jrSS said:
Optimal for 33s is 4.10. My 35s could use lower gears really.