which one??
Le Mans Master
Joined: Feb 2002
Posts: 5,970
Likes: 19
From: San Marcos Texas
so the vette's only came with 2 rears a 36 and 44. also i read somewhere that to install 4:11's in the 44 you have to machine the case alittle??? for a perfect fit
Melting Slicks
Joined: Aug 2003
Posts: 2,101
Likes: 0
From: Orange TX
You should have the dana 44D its the same as the viper. At least thats what my 1996 has got. I have been to a couple of shops that told me same thing. The dana 44D is bigger than the regular dana 44. 
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
2027 Corvette vs The World: Every Model vs Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!
Michael S. Palmer
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!
Joe Kucinski
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
the Dana 44 in the Viper is not the same as the D44 in the Vette.
The design of the bearing carrier is so totally different, as is the casing.
The D44 is an 8.5" ring gear. That is the common thread between the two diffs.
The design of the bearing carrier is so totally different, as is the casing.
The D44 is an 8.5" ring gear. That is the common thread between the two diffs.
Burning Brakes
Joined: Nov 2004
Posts: 1,057
Likes: 0
From: Warren Ohio
The D44 in C4's & Vipers are actually a heavy-duty version with a thicker pinion shaft. I've heard it called a "Super44"...don't know if that's the same as a "D44HD"...you'd have to check with U.S. Gear.
You can either buy a standard 4.11 R&P set and a 4-series carrier...or a 4.11 "thick gear" R&P, which uses the 3-series carrier you already have. Neither option requires machining of the case.
The 4.11 "thick" gear that Tom's Diffs sells is actually a U.S. Gear product.
I am running one as well, and love it. No noise.
Scott
You can either buy a standard 4.11 R&P set and a 4-series carrier...or a 4.11 "thick gear" R&P, which uses the 3-series carrier you already have. Neither option requires machining of the case.
The 4.11 "thick" gear that Tom's Diffs sells is actually a U.S. Gear product.
I am running one as well, and love it. No noise.
Scott