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Ive been looking around my local you pull it for a set of lower gears out of an older 4cyl xj. Can anyone tell me how to tell the ratio without pulling the diff cover and counting teeth?
The 4 bangers should have 4.10's I'm picking up a set tomorow from my local yard. You can check stamped steel tag that is held in by two of the diff cover bolts, one of the numbers is the ratio.
spin the driveshaft. If you get 4 (.10) spins of the driveshaft and 1 spin of the tire you have 4.10 gears. or look at the diff cover tag most should still have them on there.
The 4 bangers should have 4.10's I'm picking up a set tomorow from my local yard. You can check stamped steel tag that is held in by two of the diff cover bolts, one of the numbers is the ratio.
Not entirely true. You might get lucky and find a rare 4.56 seat, or perhaps a 3.73 set. Best to check the tag. Personally, I'd pull the cover to check the gears and then grab the entire axle. It's much easier to swap the whole axle than to try and setup used gears. Plus you get a set of axles shafts for spares or putting on eBay.
Every other 4 cyl XJ (including mine) that I've ever seen has 3.73's. I think I've only seen one or two with 4.10's. It is true that the 2.5L/auto combo will have 4.56's stock.
Also, a 2.8L/auto/242 will have 4.10's. Thats what mine came from.
Guys,
what about setting up used gears from jy instead of dropping in entire axle? I know that axle is just bolt-on, and setting up used gears can be PITA.. Now what are your opinions on that subject?
I wouldn't set up gears, unless i bought them new, and knew how to set them up.
i'm regearing my comanche to 4.10's...which to me, means putting in new axles (which i have now )
as for 2.8 4 speed...that's 3.55's. 2.8 5 speed is 3.73
you guys have to remember that all of this is a generalization. AMC wasn't very strict on any of this (nor when they changed to chrysler), so you could pretty much get what you want.