ford 8.8 gear set?

[fuzzbal]

I'm doing some shopping around for an 8.8 and i was wanting to know if anyone knows and easy way to figure out the gear ratio it has. some of the junkyards i went had no idea and i dont wanna get ripped off.

[tickwomp]

shouldnt it be on the housing?

[fuzzbal]

well ive been looking online and i came across a mustang forum where they broke down what the axle id tag meant, and it had what ratio it was so ill have to take a look next time i go look

[JoeySnow70]

too easy.... Spin the wheel two full tuns and count the turns on the drive shaft. 4 turns on the ds for a 410, 3 and 3/4 for a 373, 3 and half for 353, 3 and a quarter turns for 314... If you spin one whee and the other wheel spins in the same direction, is an LSD diff

[tickwomp]

too easy.... Spin the wheel two full tuns and count the turns on the drive shaft. 4 turns on the ds for a 410, 3 and 3/4 for a 373, 3 and half for 353, 3 and a quarter turns for 314... If you spin one whee and the other wheel spins in the same direction, is an LSD diff

yeah bro, SO easy. haha.

[Ricky Booby]

There should be a tag on the diff cover. It is metal, and attached with the cover bolts. Hopefully it is still there. It will have something like 4L10 or 3L73 or something similar. That means 4.10 gears, with a Limited Slip. It may just have 373 or 410 on it.

If you don't have one, as stated above, you can use the DS and tire method. Mark the tire, and the DS with chalk, paint marker, whatever you have. Spin the tire 1 revolution. Count how many times the DS spins. Then you'll have a pretty good idea of your ratio.

This is the only photo I can find right now. There were actually two tags on mine. One with the gear ratio (4L10) and another one that said "use synthetic gear oil only" or something like that.



Hope that helps.

Bobby

[RnEmOvr]

easiest and most secure way is remove the diff cover, its stamped on the gear, if you go based off the tag your hoping noone regeared, or maybe it doesnt have a tag (like all the ones i looked at)

[fuzzbal]

where on the gear would it be stamped?

[Fred]

second easist way and just as accurate is open the diff and count the teeth on the ring gear, count the teeth on the pinion gear. Next simply divide ring gear by the pinion gear = gear ratio