C6 differential inspection
Thread Starter
Heel & Toe
Joined: Sep 2014
Posts: 24
Likes: 0
He said that was the rear that was there when he bought the car. I don't really know how to identify what's been done back there. I'm gonna call rpm and see if any of the markings on the case can help me to identify what stage it is. I would hate to replace it with one that's rated for lower power than this one
Thread Starter
Heel & Toe
Joined: Sep 2014
Posts: 24
Likes: 0
If it were my car and I needed the rear or trans rebuit,, Heres where I woud send it to:
http://rktperformance.com/
Talk to Rick Kim. EXCELLENT Service
Call RKT Performance
5400 Yukon Court,
Suite 400
Frederick, Maryland 21703
Phone: 301.257.0930
http://rktperformance.com/
Talk to Rick Kim. EXCELLENT Service
Call RKT Performance
5400 Yukon Court,
Suite 400
Frederick, Maryland 21703
Phone: 301.257.0930
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
I hope you're not rebuilding the 05 case, the housings notoriously crack in half and the pinion shoots out the back. If your case is cracked (and if the ring gear stripped it likely is) be sure and check your transmission output shaft, they normally bend when this happens which requires a transmission rebuild.
Be sure and upgrade to a 06+ case (which requires a new transmission end plate) or a C5 rear which requires a cradle adapter that stanger383 can make you.
Rick Kim knows all of this so hopefully he's set you straight on it. He did these upgrades with a buddy local to him in MD with an 05 like mine.
Be sure and upgrade to a 06+ case (which requires a new transmission end plate) or a C5 rear which requires a cradle adapter that stanger383 can make you.
Rick Kim knows all of this so hopefully he's set you straight on it. He did these upgrades with a buddy local to him in MD with an 05 like mine.
Thread Starter
Heel & Toe
Joined: Sep 2014
Posts: 24
Likes: 0
I hope you're not rebuilding the 05 case, the housings notoriously crack in half and the pinion shoots out the back. If your case is cracked (and if the ring gear stripped it likely is) be sure and check your transmission output shaft, they normally bend when this happens which requires a transmission rebuild.
Be sure and upgrade to a 06+ case (which requires a new transmission end plate) or a C5 rear which requires a cradle adapter that stanger383 can make you.
Rick Kim knows all of this so hopefully he's set you straight on it. He did these upgrades with a buddy local to him in MD with an 05 like mine.
Be sure and upgrade to a 06+ case (which requires a new transmission end plate) or a C5 rear which requires a cradle adapter that stanger383 can make you.
Rick Kim knows all of this so hopefully he's set you straight on it. He did these upgrades with a buddy local to him in MD with an 05 like mine.
Thread Starter
Heel & Toe
Joined: Sep 2014
Posts: 24
Likes: 0
Race Director
Joined: Aug 2005
Posts: 13,592
Likes: 187
From: Hudson WI
NCM Sinkhole Donor
Thread Starter
Heel & Toe
Joined: Sep 2014
Posts: 24
Likes: 0
I haven't made any decisions yet. I was gonna wait until Rick tells me what's going on in there. What do you mean by just enough? The rear was chewed up when I got it so I don't really know what it pulls like.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
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
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
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
I have had 3:42, 3;90 and 4:10. I would always choose 4:10, more of what you are looking for. Makes the car feel 500 lbs lighter as you are giving it a longer lever to work with.
Thread Starter
Heel & Toe
Joined: Sep 2014
Posts: 24
Likes: 0
She's probably gonna see some racing with about a 50 or 60mph rolling start. How would a taller gear affect that?
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
Check out post 11 in this thread for a good explanation why.
https://www.corvetteforum.com/forums/c6-tech-performance/3049605-best-mod-for-return-on-dyno-overlay-stock-headers-cam-fast-heads.html
Race Director
Joined: Aug 2005
Posts: 13,592
Likes: 187
From: Hudson WI
NCM Sinkhole Donor
Just my opinion, and I am not going to debate why it is better than the 4:10 gears or not because it is what I wanted and I only need to satisfy one person, me!
Burning Brakes
Joined: Jul 2013
Posts: 823
Likes: 7
From: Rosewood Heights IL
Thread Starter
Heel & Toe
Joined: Sep 2014
Posts: 24
Likes: 0
I forgot to update. I had never shipped anything like that before and I was scared it would get damaged during shipping so i built a box. It's really a cradle with the diff bolted to it and a cover.
When Rick received it he found that the gears were fine but the carrier assembly had blown all to crap.
Rick rebuilt it in a day and shipped it back to me. Took me about 2.5 hours to get it back together and I've been cheesing every since. I kept the 3.73's since the gears were good. New carrier and seals and everything else.
When Rick received it he found that the gears were fine but the carrier assembly had blown all to crap.
Rick rebuilt it in a day and shipped it back to me. Took me about 2.5 hours to get it back together and I've been cheesing every since. I kept the 3.73's since the gears were good. New carrier and seals and everything else.