Results 1 to 13 of 13
Thread: Rear end gear change
-
10-12-2016, 03:14 PM #1
- Join Date
- Oct 2016
- Location
- California
- Posts
- 5
Rear end gear change
What would i need to change from 2.73 to 3.83. I have a chevy 10 bolt out of a 2001 camaro with posi. Is there a kit i can buy?
-
10-13-2016, 03:06 AM #2
- Join Date
- Sep 2010
- Location
- Bel Air, Maryland
- Posts
- 1,675
Silver- '02 Trans Am WS-6, 6M
You can go to places like Summit but the typical gearings in that range are either 3.73 or 4.11's. The big problem with going to shorter gears on the 7 1/2s is the teeth get thinner and weaker, if you are laying down a good amount of power, they wont last.
What is this going into?SLP Air Lid/Smooth Bellows
L76 6.0L block, PRC Ported 243 heads, Texas Speed 224R cam.
Kooks Emissions LT Headers/Catted Y pipe
NGK TR55 plugs
Magnaflow Cat-back
Spohn Front Upper Tubular Control Arms
UMI Front Lower Tubular Control Arms
UMI Front Sway Bar
UMI Rear Lower Control Arms/ Adjustable Panhard Rod
UMI Welded-on Two Piece Subframe Connectors
Factory C5 Z06 17x9.5 wheels w/ 285-40-17 Continental Extreme Contact Sports all the way around.
Dyno Dynamics dynoed @:
415 rwhp
-
10-13-2016, 02:57 PM #3
- Join Date
- Oct 2016
- Location
- California
- Posts
- 5
Sorry typo 3.73 is what i meant. I heard i need to get a special spacer for my carrier because it is a 2 series and im going to a 3 series ring and pinion. Not quite sure. And funny you should ask. Its in a 1984 mercedes Benz 300cd four linked with all chevy drivetrain. Im from california so with it being a "diesel" theres no smog.
-
10-13-2016, 03:50 PM #4
- Join Date
- Oct 2016
- Location
- California
- Posts
- 5
Im running a th400 trans so with the 2.73 its a dog off the line but i have top end forever. But id like to be quicker instead of having all that top end.
-
10-13-2016, 06:04 PM #5
- Join Date
- Sep 2010
- Location
- Bel Air, Maryland
- Posts
- 1,675
Silver- '02 Trans Am WS-6, 6M
You could also go with a shorter tire to take whatever ratio you put in down a little too.
My concern is what I ran into on my '89 TA that I had, I switched out 2.73's for 3.23's, and I ended up having several teeth break on me with some Richmonds. I am not saying it would happen to everyone but the thinner the teeth, the worse it could get.
-
10-16-2016, 01:50 AM #6
Yes, they make a spacer for installing "3" series gears in a "2" series carrier. The reason for this is that the pinion is offset from the carrier by a greater distance in a "2" than in a "3". Even though a "3" series pinion gear will drop in and a "3" series ring gear will bolt up, there would be a gap between the teeth without a spacer. I believe that some companies may also make a thicker ring gear to compensate. This avoids the need for a spacer and would be stronger. Been some time since I have looked into this though - I had to go with a spacer for a boneyard sourced "O" axle in our '70 Olds.
-
10-16-2016, 03:17 PM #7
-
10-16-2016, 03:54 PM #8
I am assuming the 2.73 carrier is an open diff? I'd just get a three series posi carrier with 3.73 gears. Also an install kit. It comes with bearings, crush sleeve, seal, nut, shims, and some grease for setting your tooth pattern.
Sent from my iPad using Tapatalk
-
10-17-2016, 09:54 PM #9
- Join Date
- Oct 2016
- Location
- California
- Posts
- 5
-
10-17-2016, 09:58 PM #10
- Join Date
- Oct 2016
- Location
- California
- Posts
- 5
-
10-18-2016, 03:28 AM #11
Here are some spacers. I'm pretty sure all the camaro 10 bolts are 8.5 rings, but I'm not positive about the newer ones. I think the 7.5's were s-10's and astros.
https://m.summitracing.com/search/pa...g-gear-spacers
Sent from my iPhone using Tapatalk
-
10-18-2016, 04:09 PM #12
-
11-16-2016, 03:25 PM #13
- Join Date
- Jun 2008
- Location
- Euclid,ohio
- Posts
- 197
Black- 1998 Z28
2001 Camaro has 7.5/7.625 rears. A rear with 2.73 would have a Torsen 'posi'. Most V6s' had 3.08s with open carrier. The 2.73 series carrier(2 series) would require 'thick' gears. For that 2 series carrier there are 3 sets (3.42,3.73,4.10) that are available as 'thick' sets and are available from a few aftermarket manufacturers. A spacer is a 'last resort' usage situation. Any variance in the thickness of the spacer(comparing a couple different places of the spacer) will cause an inconsistent lash setting.
Black 98Z A4 ,Yank SS3600 convertor,:SLP driveshaft loop,STB,PHB,LCAs,'flow-pac CAI,SFC,take-off 17x9 SS rims;StainlessWorks 'Y' & chambered exhaust,BMR LCA Relos,QA1s DblAdj-rear,Kenny Brown 6 Pt bolt-in cage,VGX pads
Thread Information
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
Similar Threads
-
3.73 Gear Change?
By bhunter0830 in forum Firebird / WS6Replies: 7Last Post: 09-11-2012, 08:18 AM -
with rear gear fluid change.....
By clg82 in forum DrivetrainReplies: 19Last Post: 07-23-2008, 12:26 PM -
Best source for 3.73 gear change???
By Jglisson in forum DrivetrainReplies: 2Last Post: 10-06-2007, 09:11 AM -
gear change
By silverz28camaro in forum GM TrucksReplies: 3Last Post: 12-25-2006, 04:16 PM -
gear change, went slower, what gives?
By Andy Lappin in forum Drag RacingReplies: 10Last Post: 06-22-2006, 01:35 PM
Bookmarks