gear ratio help!

[Johnny Dart]

Ended up buying a new set of Motive 3:55 gears and bearing kit. This is the first time I've pulled a chunk from a 8.75. Now I get why they so niiiice:cheers:

Make sure it is set up correctly. Google setting up "ring and pinion" to better familiarize yourself with what the contact pattern should look like.
Terms like pinion depth and backlash. Hopefully you have found a component shop to help with the install. Cheers.

 

[solracmopar]

Well heck,since your spending money,lets go to the Suregrip store !

Oh that thought has already crossed my mind.. just found someone selling new posi's for $380..? http://www.ebay.com/itm/Chrysler-8-...Parts_Accessories&hash=item565ae8cbb0&vxp=mtr

 

[solracmopar]

Not really sure how Summit overnights stuff (free shipping).. but hey I'll take it!

 

[MoparDaddy]

Here's an ignorant question for everyone that I've forgotten the answer to. Without pulling the diff cover, how do you calculate your gear ratio? Jack up the rear end and spin the tire, ect. I don't remember the details

 

[Johnny Dart]

Sounds like a great thread.....:thumblef:

 

[godfatherofchry]

When I go with the new gears your welcomed to the 3:55. Throw me an offer and they are yours!

I wouldn't go any more than 50.00 bucks on a set of gears that were set up wrong!!!!!!!!!!!?????????????...........Artie

 

[solracmopar]

Here's an ignorant question for everyone that I've forgotten the answer to. Without pulling the diff cover, how do you calculate your gear ratio? Jack up the rear end and spin the tire, ect. I don't remember the details

My gears had a stamping on them.

 

[MoparDaddy]

My gears had a stamping on them.

I'm sure mine do too, but I'm trying to avoid removing the diff cover when a new gasket was just installed

 

[74DartSwinger360]

Here's an ignorant question for everyone that I've forgotten the answer to. Without pulling the diff cover, how do you calculate your gear ratio? Jack up the rear end and spin the tire, ect. I don't remember the details

Pretty sure its one spin of the tire to the amount of spins of the yoke of the pig

(For example about 3.25 yoke turns to one tire spin would be 3.23s and so on)

 

[MoparDaddy]

Thanks Emilio! That's what I needed

 

[solracmopar]

Happy I stuck with the 3:55 ratio. Driving the car 55mph I'm running 2500rpm. Can't imagine it any higher than that for around town. No doubt the 3:73 would of been too much for what I'm trying to do. Thanks for advice to all who gave their 2c :glasses7:

 

[Johnny Dart]

Cool deal...Grass dont grow under your feet.
How's the gear set working ? Quiet ?

 

[solracmopar]

Thanks for asking Johnny, gear set and new bearing kit really made things quiet.

 

[Johnny Dart]

Cool beans bro...Glad it worked out for you...Good Times !!!!!