A 3.73 gear ratio in a 2004 V10 Ford Excursion is generally considered a good balance for both towing and everyday driving. It provides decent torque for hauling heavy loads while still offering reasonable fuel efficiency for highway driving. However, if you're primarily using the vehicle for towing or off-road purposes, you might find a lower gear ratio more beneficial. Ultimately, the best choice depends on your specific driving needs and preferences.
its either 355 or 373 there are tags on diff that give you numbers
most common ratio is 373
It will affect the speedometer but the tachometer will still be accurate.
The 373 is a lower ratio than the 410.
373
My RPO says my 1996 Z28 has a 273 Posi ? Is that for real ? It doesn't feel like 273....feels much more like 373 or 342 !
Yes, whether you are replacing the whole rear-end or just the center diff they are interchangable. Just be sure the gear ratio is the same if it is a 4wd, if it is a 2wd can be any gear ratio. Higher for better gas milage such as 330 or 355, lower 373 or 410 for pulling power hope this helps.
check option label in glove box for g codes gu6 = 342 gt4 =373 gt5 =411 etc or call dealer with vin
to use 4 wheel drive,both front and rear ends must have same gear ratio. if you dont want to use 4 wheel drive,u can change rear ratio,but remove front drive shaft so as not to accidently engage 4 wheel drive and trash your transmission
The 410 gear will cost you gas miliage and it is a lot lower then a 373.
To calibrate your speedometer after switching the rear end to a 3.73 gear in your 1997 Firebird Formula, you'll need to adjust the speedometer gear or use a tuning tool if your vehicle is equipped with an electronic speedometer. If using a mechanical speedometer, replace the speedometer gear with one that corresponds to the new gear ratio. For electronic systems, you may need a handheld tuner or a reprogramming tool to adjust the speedometer settings according to the new rear-end ratio. Always verify the calibration by comparing the speedometer reading to a GPS or radar speed measurement.
1 and 373 are the only factors of 373, since it is prime.