Very true.
Differential question???
Thread Starter
Advanced
Joined: Jul 2010
Posts: 72
Likes: 1
From: Rome Georgia
Differential question???
Hello fellow corvette members. I have a question about a 97 a4 2.73 differential. Of course I have the 2.73 differential. I want a 3.90 differential. I was wondering is it possible to just swap out the gears or will it be cheaper to just go on ahead and buy a 3.90 differential? Thanks
Melting Slicks
Joined: Dec 2003
Posts: 2,857
Likes: 2
From: pawleys island sc
there was someone on the forum that could modify the diff to accept different gears, but by the time you pull yours out ship to them ,get it back and reinstall, you're probably better off such putting in a new diff. That's what I did.
Le Mans Master
Joined: Apr 2005
Posts: 8,077
Likes: 4
From: Scarborough ONTARIO
Doing yourself something is great feeling than writing check, however in this case buy 3-rib case and go with 4.10 or 3.90. But again contact rpm transmissions they sell a adapter that will accept 3.xx gears in a 2.73 carrier.
Tech Contributor
Joined: Aug 1999
Posts: 16,376
Likes: 404
From: Should this thoughtful, valuable contribution meet with no acknowledgement or 'thanks' this post----
many say it does not have to be a so-called 3-rib either....just the guts are what are important.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Safety Car
Joined: Jul 2005
Posts: 4,205
Likes: 2
From: Chicago-NW Burbs Illinois
You can send your 2-rib carrier to RPM transmission, and they will swap out to whatever gears you want (i.e. 3:42's, 3:73's, 3:90's or 4:10's). I would have them also do the hardened shafts as well, if you have them do the swap. I went from 2:73's to 3:73's with a Vig 3400 stall...night and day difference. RPM did all my drivetrain work.