C6 Tech/Performance LS2, LS3, LS7, LS9 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

2005 Diff options

Thread Tools
 
Search this Thread
 
Old Sep 17, 2013 | 01:54 PM
  #1  
Cold6.2's Avatar
Cold6.2
Thread Starter
Instructor
 
Joined: Dec 2012
Posts: 178
Likes: 0
From: Ruston Louisiana
Default 2005 Diff options

What are my options? Wait till it blows or have my stock diff upgraded or swap to a c6 or c5z? Ill be looking to make 600-700rwhp and possibly in a yr or so build a stroker and shoot for 1k+.
Reply
Old Sep 17, 2013 | 02:55 PM
  #2  
Gering's Avatar
Gering
Tolero Apto Victum
Supporting Lifetime
15 Year Member
 
Joined: Jul 2007
Posts: 9,669
Likes: 37
From: Woodlands TX
Default

Forum member http://forums.corvetteforum.com/memb...turytrans.html has a lot of good post on this subject. On my 07 I went with RPM - http://www.rpmtransmission.mobi/differentials.html Good luck with your build!
Reply
Old Sep 17, 2013 | 02:57 PM
  #3  
Cold6.2's Avatar
Cold6.2
Thread Starter
Instructor
 
Joined: Dec 2012
Posts: 178
Likes: 0
From: Ruston Louisiana
Default

Thanks!
Reply
Old Sep 17, 2013 | 03:00 PM
  #4  
Justasheet's Avatar
Justasheet
Melting Slicks
 
Joined: Sep 2008
Posts: 2,286
Likes: 4
Default

Originally Posted by Cold6.2
What are my options? Wait till it blows or have my stock diff upgraded or swap to a c6 or c5z? Ill be looking to make 600-700rwhp and possibly in a yr or so build a stroker and shoot for 1k+.
Most economical route is C5Z and a bracket made by Stanger383 but at a 1K HP, I would speak to RPM. If you wait till it breaks, you might need a transmission too.
Jeff
Reply
Old Sep 17, 2013 | 03:17 PM
  #5  
Gering's Avatar
Gering
Tolero Apto Victum
Supporting Lifetime
15 Year Member
 
Joined: Jul 2007
Posts: 9,669
Likes: 37
From: Woodlands TX
Default

Originally Posted by Justasheet
Most economical route is C5Z and a bracket made by Stanger383 but at a 1K HP, I would speak to RPM. If you wait till it breaks, you might need a transmission too.
Jeff


Here is a thread about that - http://forums.corvetteforum.com/c6-t...-rear-end.html
Reply
Old Sep 17, 2013 | 03:55 PM
  #6  
taken19's Avatar
taken19
Track Junky
15 Year Member
Conversation Starter
All Eyes On Me
Photogenic
 
Joined: Jun 2007
Posts: 4,074
Likes: 36
From: Orlando Area
Tech Contributor
Default

Quick solution (but not permanent) is a tranny brace. Long term solution is the C5Z three rib solution above or later model LS3/Z06 diff.
Reply
Old Sep 17, 2013 | 07:09 PM
  #7  
timd38's Avatar
timd38
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Aug 2005
Posts: 13,592
Likes: 187
From: Hudson WI
NCM Sinkhole Donor
Default

I only have 550 at the wheels and have a C6 diff with HD pinion bearing, Quaife center, hardened out put shafts and a brace. Not sure what you need for more HP.

Reply
Old Sep 17, 2013 | 07:10 PM
  #8  
stanger383's Avatar
stanger383
Drifting
15 Year Member
 
Joined: May 2005
Posts: 1,655
Likes: 8
From: Avon Indiana
St. Jude Donor '09
Default

I agree for 1000HP I might go c6 z06 diff (call RPM)if you can live with the 3.42 gear... But if you decide to go c5Z let me know. here is a model of my brackets that allow a direct bolt in of the c5z diff

[IMG][/IMG]

Last edited by stanger383; Sep 17, 2013 at 07:12 PM.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-1

2027 Corvette vs The World: Every Model vs Closest Competitor

 Joe Kucinski
story-2

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
story-3

5 MOST and 5 LEAST Popular Corvette Model Years in History!

 Joe Kucinski
story-4

2027 Corvette Buyer's Guide: Everything You Need to Know!

 Joe Kucinski
story-5

10 Things C8 Corvette Owners Hate (But Won't Tell You)

 Joe Kucinski
story-6

10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

 Brett Foote
story-7

Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

 Joe Kucinski
story-8

Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

 Michael S. Palmer
story-9

5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

 Joe Kucinski
Old Sep 17, 2013 | 07:21 PM
  #9  
saplumr's Avatar
saplumr
Race Director
Supporting Lifetime
15 Year Member
 
Joined: Oct 2005
Posts: 14,555
Likes: 1,255
From: Saint Albans, WV
Default

Originally Posted by stanger383
I agree for 1000HP I might go c6 z06 diff (call RPM)if you can live with the 3.42 gear... But if you decide to go c5Z let me know. here is a model of my brackets that allow a direct bolt in of the c5z diff
RPM has 373/390/410 gears available for the C6 Z diff.
Reply
Old Sep 17, 2013 | 07:43 PM
  #10  
timd38's Avatar
timd38
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Aug 2005
Posts: 13,592
Likes: 187
From: Hudson WI
NCM Sinkhole Donor
Default

Originally Posted by saplumr
RPM has 373/390/410 gears available for the C6 Z diff.
I got my gears and other parts from them. Nice people that know their stuff. I used a European Z51 case.

3:73 gears and a lumpy cam work really well together.

Last edited by timd38; Sep 17, 2013 at 08:04 PM.
Reply
Old Sep 17, 2013 | 07:49 PM
  #11  
stanger383's Avatar
stanger383
Drifting
15 Year Member
 
Joined: May 2005
Posts: 1,655
Likes: 8
From: Avon Indiana
St. Jude Donor '09
Default

Originally Posted by saplumr
RPM has 373/390/410 gears available for the C6 Z diff.
great people for sure but.......
Not for a C6 Z06...... nobody makes gears for the Z06 case

Last edited by stanger383; Sep 17, 2013 at 07:51 PM.
Reply
Old Sep 17, 2013 | 08:23 PM
  #12  
trayack's Avatar
trayack
Drifting
10 Year Member
 
Joined: Sep 2009
Posts: 1,330
Likes: 61
From: Nantucket MA
Default

I'm at 600 to the tire and went with Stanger383's C5Z swap mount. LOVE the mount. Last week I snapped the driver's side stub axle at the track. 3 hours later RPM had it back on the ground with new 300M shafts and Carbon clutches. Won't have that issue again. I do plan on adding a brace and C5 outer axles/CVs over the winter, and most likely have my trans upgraded to a Stage 5 by RPM as well.
Reply
Old Sep 17, 2013 | 08:26 PM
  #13  
saplumr's Avatar
saplumr
Race Director
Supporting Lifetime
15 Year Member
 
Joined: Oct 2005
Posts: 14,555
Likes: 1,255
From: Saint Albans, WV
Default

Originally Posted by stanger383
great people for sure but.......
Not for a C6 Z06...... nobody makes gears for the Z06 case
I know they weren't available a few years ago when they did mine but unless I'm totally misreading their web site they are available.
Reply
Old Sep 17, 2013 | 08:33 PM
  #14  
stanger383's Avatar
stanger383
Drifting
15 Year Member
 
Joined: May 2005
Posts: 1,655
Likes: 8
From: Avon Indiana
St. Jude Donor '09
Default

Rodney at RPM is a good friend of mine and I can assure you that nobody makes a gear set for that case. If some one must deviate from the 3.42s they either go with 06+ diff or the C5 diff. they can build a diff for any power level you can dish out

Last edited by stanger383; Sep 17, 2013 at 08:41 PM.
Reply
Old Sep 17, 2013 | 10:19 PM
  #15  
realcanuk's Avatar
realcanuk
Le Mans Master
10 Year Member
All Eyes On Me
Photogenic
Photoriffic
 
Joined: Apr 2011
Posts: 7,820
Likes: 408
From: Montreal
St. Jude Donor '13
Default

Originally Posted by trayack
I'm at 600 to the tire and went with Stanger383's C5Z swap mount. LOVE the mount. Last week I snapped the driver's side stub axle at the track. 3 hours later RPM had it back on the ground with new 300M shafts and Carbon clutches. Won't have that issue again. I do plan on adding a brace and C5 outer axles/CVs over the winter, and most likely have my trans upgraded to a Stage 5 by RPM as well.
I don't think anyone knows this stuff better than RPM, and I hope that you don't have the bad luck I did. I broke one of those 300m shafts. Since replacing it with the newer re-engineered DSS shafts, (supposedly stronger than 300m ) I haven't had a problem.
Reply
Old Sep 18, 2013 | 08:27 AM
  #16  
Justasheet's Avatar
Justasheet
Melting Slicks
 
Joined: Sep 2008
Posts: 2,286
Likes: 4
Default

Originally Posted by stanger383
here is a model of my brackets that allow a direct bolt in of the c5z diff

[IMG][/IMG]
Norm,
You got high tech. Nice computer rendering. I remeber the hand written drawing you sent me with my bracket.
Jeff
Reply

Get notified of new replies

To 2005 Diff options





All times are GMT -4. The time now is 10:24 AM.

story-0
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-1
2027 Corvette vs The World: Every Model vs Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-20 17:58:41


VIEW MORE
story-2
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-3
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-4
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-5
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-6
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-7
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE
story-8
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

Slideshow: Breaking down the 2027 Grand Sport, Grand Sport X, Stingray, and LS6 V8.

By Michael S. Palmer | 2026-03-26 13:48:45


VIEW MORE
story-9
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

Slideshow: 5 reasons bad drivers crash sports cars & 5 ways to avoid a costly shame!

By Joe Kucinski | 2026-03-25 16:32:55


VIEW MORE