PDA

: Anyway to tell what gears I have visually?

nsxracer
04-25-2009, 03:26 PM
I bought a truck with lift kit and big wheels. I have no idea if there is different gears on it or even different axles. Its extreme leafspring lift on 99 f150.
leben_sie_gut
04-25-2009, 04:38 PM
Prolly the easiest way, although not most accurate, would be to jack up one rear wheel, put the truck in neutral, and make a mark on a wheel and driveshaft. Rotate driveshaft. If it takes 4.1 rotations of driveshaft to turn the wheel 1 rotation....you have a 4.10 gearset.
jenks21
04-25-2009, 05:25 PM
Prolly the easiest way, although not most accurate, would be to jack up one rear wheel, put the truck in neutral, and make a mark on a wheel and driveshaft. Rotate driveshaft. If it takes 4.1 rotations of driveshaft to turn the wheel 1 rotation....you have a 4.10 gearset.


If it is not posi and he only turns one tire he needs to go two revolutions. If it is posi then only one, and you need to jack up both rears / fronts.

later
jenks
HAPPYJOHN
04-25-2009, 08:36 PM
If it is not posi and he only turns one tire he needs to go two revolutions. If it is posi then only one, and you need to jack up both rears / fronts.

later
jenks

x2
leben_sie_gut
04-26-2009, 11:39 AM
This is the troof. Sam Adams was talking last night, ignore previous posts. lol
Davethorik
04-26-2009, 11:55 AM
best way is to simply pop the diff cover and see what is stamped on the ring gear.
GMCTruxrule
04-26-2009, 04:23 PM
Muy bueno.
jenks21
04-26-2009, 04:34 PM
Muy bueno.

agree, just wanted to get rid of false info.

later
jenks
nsxracer
04-27-2009, 09:03 AM
best way is to simply pop the diff cover and see what is stamped on the ring gear.

seems like easy enough. Do I have to worry about jacking up the car or worry about anything falling out once I unbolt cover?
Balsax
04-27-2009, 09:39 AM
... Do I have to worry about anything falling out once I unbolt cover?

oil will fall out.

You can also divide the amount of ring gear teeth by pinion teeth to get the ratio...
JediJesus
04-27-2009, 09:40 AM
jack it up so you can spin the tires, rotating the ring gear, the stamp might not be visable, and the only thing that will fall out (hopefully) is gear oil
Davethorik
04-27-2009, 09:42 AM
oil will fall out.

You can also divide the amount of ring gear teeth by pinion teeth to get the ratio...

I have tried this a couple times, and I find it nearly impossible to see the pinion on some axles. It is MUCH easier to just find the ring gear stamp. What is so challenging about that?
leben_sie_gut
04-27-2009, 07:51 PM
Perhaps it should be added to NOT GET THE GEAR OIL ON YOU!!!!!