12 bolt gear set treatment options

Myron Piatek · 01-09-2015, 04:57 PM

I haven't sat down and counted the runs, but my Chrysler 8 3/4 gears have been lasting longer with cryo and REM surface finish treatments. I've had them done at Evans Performance near Atlanta.

http://www.evansperformance.com/

There was an article years ago showing that a 12 bolt was the most efficient differential. A Dana 60 is more efficient than an 8 3/4" which helps compensate for the weight and a Ford 9" is one of, if not the worst for efficiency.The pinion to ring gear relationship has a lot to do with the efficiency ratings.

01-09-2015, 04:57 PM	#7
Myron Piatek VIP Member Join Date: Nov 2001 Location: Florida Posts: 1,542 Likes: 34 Liked 138 Times in 51 Posts	Re: 12 bolt gear set treatment options I haven't sat down and counted the runs, but my Chrysler 8 3/4 gears have been lasting longer with cryo and REM surface finish treatments. I've had them done at Evans Performance near Atlanta. http://www.evansperformance.com/ There was an article years ago showing that a 12 bolt was the most efficient differential. A Dana 60 is more efficient than an 8 3/4" which helps compensate for the weight and a Ford 9" is one of, if not the worst for efficiency.The pinion to ring gear relationship has a lot to do with the efficiency ratings. __________________ LOCOMOTION Racing