2014 9.5" Ring and Pinion

CAtaylor · January 30, 2014

Has anyone here done a ring and pinion swap on one of these yet. I am looking for some 4.10 or 4.56 possibly to get the RPM's up a bit for some 35's. I am also curious with the torque curve of the new motor if the 4.10's would be sufficient or should I go all out with the 4.56's. One more question, is the front diff the same as the 13 yr model? I have read a couple things that make me unsure of this.

beachtaco · January 30, 2014

Same questions here except I'm looking for a set of gears on the 9.75".

CAtaylor · January 30, 2014

It looks as if they are a little farther along with the 9.5 vs the 9.75. The only info I have been able to find is from East Coast Gear " http://eastcoastgearsupply.com/files/PDF%20Files/gm9-5-12-bolt.pdf " . From the info here the preferred method is to use the old style 9.5" carrier and gears and make it work but you have to install a spacer between the diff and the cover. I am hoping someone knows if someone is in the process of manufacturing gears that will work with the new carrier, if not I will go the route they are recommending. It really does pretty good right now so I can wait a bit if needed. I emailed Yukon but have not received a response yet.

Jon A · January 30, 2014

That's fantastic info, CAtaylor! Thanks so much! I'm planning on swapping to a Trutrac diff anyway so it should be a pretty straightforward swap with their cover spacer.

CAtaylor · January 30, 2014

Glad I could help. I have been searching every since I bought the truck and finally came across that a few days ago. I am more than likely going to go this route as well and it would be a good upgrade from the G80. I was going to run the G80 till it gave up but if someone doesn't hurry up with gears for the new carrier I will go ahead and upgrade. Does anyone have any info on the front diff? Is it the same as previous?

beachtaco · February 7, 2014

thanks for the information CAtaylor. i just it a wait and see what develops on the 9.75. I was hoping to regear when I did my lift but I guess it will be a wait and see.

CAtaylor · February 7, 2014

Yep, i am tired of waiting as well for replacement gears for the new carrier. I am fixing to pull the trigger on a trutrac for the old 14 bolt and 4:56's all the way around. The front diff is the same as previous years. I have the quote setting in my in box just been trying to convince myself i need to spend the 1500 to get the parts. The carrier is the expensive part but it will be worth it in the long run, cant go wrong with a Detroit really.

sailor9908 · April 8, 2014

There's another post in here about a guy who was working with Yukon to make/fit a ring and pinon for the rear. He said the fronts dropped right in but the back was a pain in the a**. I'm looking for the post and will link it when I find it

** the guys member name is "white14" just search through his posts and you'll find it

CAtaylor · April 8, 2014

This must have got brought over from the general forums. This was continued at the below link. Maybe the mods can merge them or delete this one. Yukon used that guys for development but there is no ETA for their release, this is the only way for now.

http://www.gm-trucks.com/forums/topic/158167-gear-change-95-12-bolt/