Well its time to make this pig move a little easier

The gear change is going to serve two purpose's..
1- to go faster and
2- to aid in pulling the jeep around..

I do alot or hwy driving (75mph) so i dont want to turn the motor to high for hours on end..

Im rollin on 255/75/17's (touch over 32") and 3.73's right now which put me at about (in OD) 2100rpm @ 75mph rite now..So the 4.30's will put me roughly at 2400rpm and the 4.56's at almost 2600rpm..

I can probably live with the 2600 in OD but im worried about almost 3500rpm in 3rd when pulling up hills with the jeep..

When i had the tbss i pulled 5k up a 6% grade for 3 miles @65mph in 3rd with the convertor locked and that impressed the hell outta me..

Anyhow 4.30's or 4.56's??

 

rpm = power = 4:56

 

what tranny 80e? if have an 80e i would do them 4.56

 

I've got 4:30's & I feel I could pull anything.

 

4.30's.. im running 4.56's and do alot of mixed driving... also pull a 82 k5 blazer lifted on 38inch boggers to bricks in poplar bluff once a month and i feel 4.30's would do the job just fine... if i were to do it again 4.30's fwiw and i now have 295/70/17 nitto mts, but then again i came from factory 3.42's!!

 

Do the 4.56's and quit being a puss.... It'll never be fast anyway.

 

Well i was leaning towards the 4.30's from the get go so i think im gonna roll with them


Dont you hve a work bench to be bent over???

 

Hahaha.... Dick.

 

they don't make 4.30's for the 8.25ifs. yours is a z71 right?

 

Hmmm didnt know that..Coulda swore i saw them listed on Rons site.. Yeah 7z1..