I had mine done by RPM as well. 
4.10 rear Differential
Thread Starter
Instructor
Joined: Dec 2006
Posts: 131
Likes: 0
From: D'Iberville Mississippi
4.10 rear Differential
Im looking at putting 4.10s in my 1999 FRC and was looking around at different places that sell the rear differentials. Has anyone heard of Gulf Coast Performance out of Houston and what kind of work they do. I have already talked with Texas Speed and Thunder Racing and they are both about $300.00 more expensive than Gulf Coast Performance. Thanks for any advise.
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 180
From: S.W. Ohio. . . . . . NRA Life Member
is Gulf Coast Performance including the strengthened output shaft? It's important to upgrade that part for these more radical ratios. It cost about $300 more; so that's why I am asking if it's included from them or not.
Thread Starter
Instructor
Joined: Dec 2006
Posts: 131
Likes: 0
From: D'Iberville Mississippi
Yes, it included the left side harded shaft, which is the one that creates all the problem. From what he told me the right side is not an issue unless u are running serious HP.
Melting Slicks
Joined: Mar 1999
Posts: 3,029
Likes: 137
From: Nashville TN area
Talk with Tracy Lewis @ RevExtreme before you make a decision on where to buy or get an install.. they've been an outstanding shop to work with and he offered me a phenomenal price on 4.10's for my Z06..
Le Mans Master
Joined: Aug 2007
Posts: 6,473
Likes: 297
From: Orange Park FL
Im looking at putting 4.10s in my 1999 FRC and was looking around at different places that sell the rear differentials. Has anyone heard of Gulf Coast Performance out of Houston and what kind of work they do. I have already talked with Texas Speed and Thunder Racing and they are both about $300.00 more expensive than Gulf Coast Performance. Thanks for any advise.
Pit-man
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
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
Race Director
Joined: Sep 2003
Posts: 13,550
Likes: 6
From: Now in God's Country, the Big Sky, Montana!
Cruise-In 7-8-9-10 Veteran
St. Jude Donor '06-'07-'08-'09-'10-'11-'12
Thanks guys!
Just to add something further that I started at the beginning of this year, I only use micropolished gears.
Jason
Just to add something further that I started at the beginning of this year, I only use micropolished gears. Jason
Race Director
Joined: Mar 2001
Posts: 11,405
Likes: 26
From: Whippany NJ
CI 6-7-8-9 Veteran
St. Jude Donor '08-'09
NCM Sinkhole Donor
