boise49ers
NAXJA Forum User
- Location
- Boise,Idaho
I'm getting 4.56s. I have the 4 speed automatic AW-4, I have 31" tires, and I'll have 4.56 gears. Everything else is factory. NP 231 Transfer case. 1988 Pioneer XJ. What would be my Crawl ratio ?
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4.56 Crawl ratio with 31" tires
- Thread starter boise49ers
- Start date
- Location
- Westminster, SoCal
Big Red
NAXJA Forum User
- Location
- Roscoe, IL 61073
boise49ers said:
2.8 AW4 1st gear x 2.72 231 t-case x 4.56 = 34.72
You can double this # to figure in the torque converter. That's the ratio I was running which wasn't bad. I had 35's, so with 31's that should work for you. Now I have: 2.8 x 4 x 5.43 = 60.81 which should work better with my 37's.
BrettM
NAXJA Forum User
- Location
- michifornia
that is more than enough crawl. i have the same tranny and t-case, but 4.88 diff gears, and 35" tires. it is the perfect ratio for Fordyce and the Rubicon, maybe a little low for the Hammers trails.
boise49ers
NAXJA Forum User
- Location
- Boise,Idaho
Big Red said:
So you double the 34.72 to 1 crawl ratio when you add in the torque converter ?
