ive have combed over the old threads with no luck. i have the 9 bolt rear-end with 3.27 gears but i want to change it with a 3.73. does anyone know where i can find one? i really dont wanna swap it with a 10 bolt couse the 9 bolt is alot stronger. any info would be awesome 88 5.7 formula 700r4

 

The 9 bolt is stronger than a 10 bolt but not by a whole lot.

www.9bolt.com is your best choice for 9 bolt parts.

 

i was lookin at that site and i sent them an email, they offer a 3.70 or a 3.90, i do more city driving but would still like to take it on the highway, witch do i go with?

 

I can get you a 3.70. I don't remember what the exact price is, but it's around $200. These gears make a little noise. All of the 9 bolt 3.70 gears do, from what I have heard. I know that the 3.70 gears that I have installed made a little noise and the pinion depth and backlash were set correctly.

 

thanks for the link..

 

I checked the price on the 3.70 and it's $170.

 

jawsgear.com has 3.70 gears and they are in the US. They are made by motive gear and are noisy and they also sell rebuild kits wither bearing and shims and I think a pinion seal too and also a small booklet with instructions on how to set it up.