binderbart
NAXJA Forum User
- Location
- Iowa
anyone know of a web site with a rpm calculator? where you can punch in tire size/mph/rpm's and get the gear ratio?
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Rpm calculator
- Thread starter binderbart
- Start date
WheelsUp
NAXJA Forum User
- Location
- B-Burg, VA
try this, it may be there:
http://www.rocky-road.com/calculator.html
http://www.rocky-road.com/calculator.html
binderbart
NAXJA Forum User
- Location
- Iowa
WheelsUp said:
tried it, it computed to Nan???
I'll try it again later, we're headed to the shop to do some wrenching. I have 31x10.5x15's, at 55 I tach at 2100, just trying to guess what the rear axle is geared at before I tear it out.
WheelsUp
NAXJA Forum User
- Location
- B-Burg, VA
I just thought about this and you'll need a couple more numbers to figure your gear ratio. With just those numbers you could probably figure your final drive ratio, but I doubt that's what your after.
try this one:
http://www.4lo.com/calc/gearratio.htm
try this one:
http://www.4lo.com/calc/gearratio.htm
jeepnuts311
NAXJA Forum User
- Location
- Atlanta, Georgia
binderbart said:
what engine/tranny do you have?
that will tell you alot...if its 4.0L with AW4 auto then you have 3.55s unless you have the offroad (skids, towhooks)and towing package on it, then you have 3.73s
-Tim
binderbart
NAXJA Forum User
- Location
- Iowa
jeepnuts311 said:
what I have is not stock by any means, there is a ford nine inch rear axle in it that was custom made. The front axle tag said it was a 3:54 but once I tore it down I found it to be a 4:56 geared front end. I'm thinking that tomorrow I'm going to drop a stock D35 in the rear that is 3:54 to match the stock front I dropped in 2 weeks ago.
bcmaxx
NAXJA Forum User
- Location
- The West Kootenays,B.C. Canada
you're going backwards!binderbart said:
binderbart
NAXJA Forum User
- Location
- Iowa
bcmaxx said:
Its mainly a daily driver with some offroading here and there that I need to get on the road right now. My back up rig died tonight.
