Gears
3rd Gear Member
Joined: Mar 2006
Posts: 706
From: Ohio
RE: Gears
ORIGINAL: MusiccityGT
The FRPP gear set comes with a new pinion nut, crush sleeve and pinion shims. You should also get a new rear pinion bearing. You will need a shim assorment for the carrier to set the backlash properly. You will need 3 quarts of synthetic 75/90 gear lube and friction additive. I used the ford lube and additive even though it cost more. There are others that are a little cheaper. A front seal isn't really needed unless it is damaged during the pinion removal which is rare. If you had high miles, then it would be good to go ahead and change it. That is all that you will need, and the rear end is an 8.8", and the gears and pinion are all the same for an 8.8" rear differential.
Now all you need is a good installer!
The FRPP gear set comes with a new pinion nut, crush sleeve and pinion shims. You should also get a new rear pinion bearing. You will need a shim assorment for the carrier to set the backlash properly. You will need 3 quarts of synthetic 75/90 gear lube and friction additive. I used the ford lube and additive even though it cost more. There are others that are a little cheaper. A front seal isn't really needed unless it is damaged during the pinion removal which is rare. If you had high miles, then it would be good to go ahead and change it. That is all that you will need, and the rear end is an 8.8", and the gears and pinion are all the same for an 8.8" rear differential.
Now all you need is a good installer!
Rex
4th Gear Member
Joined: Jan 2006
Posts: 1,644
From: Nashville Tn
RE: Gears
Glad I could help! It is very similiar to a g.m. rear end for the most part. Just be certain of the preload at 25 inch pounds if you use a new bearing 15 with and old, and get your depth and run-out/backlash correct. And for goodness sake, don't get the additive on you, It stinks to the high heavens for days! LOL....
3rd Gear Member
Joined: Mar 2006
Posts: 706
From: Ohio
RE: Gears
ORIGINAL: MusiccityGT
Glad I could help! It is very similiar to a g.m. rear end for the most part. Just be certain of the preload at 25 inch pounds if you use a new bearing 15 with and old, and get your depth and run-out/backlash correct. And for goodness sake, don't get the additive on you, It stinks to the high heavens for days! LOL....
Glad I could help! It is very similiar to a g.m. rear end for the most part. Just be certain of the preload at 25 inch pounds if you use a new bearing 15 with and old, and get your depth and run-out/backlash correct. And for goodness sake, don't get the additive on you, It stinks to the high heavens for days! LOL....
yeah gear oil stinks BAD.. been there done that .. the additive does also
thanks again .. you guys are great.. two thumbs up...!!!!!
Rex
2nd Gear Member
Joined: Dec 2005
Posts: 328
From: Englewood, CO
RE: Gears
I actually bought the Motive gears from one of our sponsors and my drivetrain guy refused to install them stating they were not tracking properly (and thus would whine). Sent 'em back, ordered a set of FRPP gears, they went together easily and overall I couldn't be happier!
1st Gear Member
Joined: Oct 2005
Posts: 131
From: New Jersey
RE: Gears
Rex, did mine last week, pretty staight forward and no problems. Ended up using all the original shims and it was set-up perfect. I've heard from more than a few that's the way it usually goes when you use the Ford gears. Worked out for me.
Here's my parts list and I didn't need anything else.
1 F3TZ-4630-A Cone (pinion bearing) 30.29
1 F3TZ-4628-A Cup (pinion bearing cup) 17.10
1 B7A-4662-A Spacer pinion (extra crush sleeve just in case) 11.04
1 F89Z-4676-AA Seal (Again, just in case) 22.23
2 XY-75W140-QL Synthetic gear lube 49.12
2 XL-3 Friction modifier additive 13.28
1 Tube black or gray RTV
2 Cans brake clean
Meaure the old pinion head with calipers, if it's the same as the new pinion (mine was) use the original spacer. If it's different do the math to determine the spacer size.
Definitely worth the effort.
Here's my parts list and I didn't need anything else.
1 F3TZ-4630-A Cone (pinion bearing) 30.29
1 F3TZ-4628-A Cup (pinion bearing cup) 17.10
1 B7A-4662-A Spacer pinion (extra crush sleeve just in case) 11.04
1 F89Z-4676-AA Seal (Again, just in case) 22.23
2 XY-75W140-QL Synthetic gear lube 49.12
2 XL-3 Friction modifier additive 13.28
1 Tube black or gray RTV
2 Cans brake clean
Meaure the old pinion head with calipers, if it's the same as the new pinion (mine was) use the original spacer. If it's different do the math to determine the spacer size.
Definitely worth the effort.
4th Gear Member
Joined: Apr 2006
Posts: 1,541
From:
RE: Gears
ORIGINAL: Stewart
All you manuals out there what rmp's do you cruise at at about 75 with 4.10 and 3.73's? Thanks.
All you manuals out there what rmp's do you cruise at at about 75 with 4.10 and 3.73's? Thanks.
2nd Gear Member
Joined: Feb 2006
Posts: 382
From: Peoria, AZ
RE: Gears
ORIGINAL: Stewart
All you manuals out there what rmp's do you cruise at at about 75 with 4.10 and 3.73's? Thanks.
All you manuals out there what rmp's do you cruise at at about 75 with 4.10 and 3.73's? Thanks.
http://www.8bsp.com/mystang/trans_mustang_manual.xls
I ♥ Acer
Joined: Nov 2005
Posts: 1,585
From:
RE: Gears
With 4.10's (and lots of other stuff) I am at 2900 rpm in 5th gear @ 65 mph. I have a very aggressive set-up and the norm should be about 2200-2600 rpm in 5th @ 65 mph. The Ford's seem to be tried and proven and I would go with them IMO. I have heard many complaints about the motives and 0 on the the ford. In my personal experience, next to a predator or sct tune, the gear change has been the most dramatic increase in performance for the money and should be on your priority upgrade list from stock IMO.