Go Back   Corvette Forum > C5 Corvettes, 1997 - 2004 > C5 Tech
Sign in using an external account
Register Forgot Password?
Register Search Today's Posts Mark Forums Read FAQ Vendor Directory
Search
C5 Tech
Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace Sponsored by
Karl Chevrolet

Welcome to Corvetteforum.com!
Welcome to Corvetteforum.com.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join Corvetteforum.com today!


Corvette Store
 
 
C7 Parts & Accessories
C6 Parts & Accessories
C5 Parts & Accessories
C4 Parts & Accessories
C3 Parts & Accessories
C2 Parts & Accessories
C1 Parts & Accessories
Wheels & Tires
Sponsored Ads
 
 
Vendor Directory
  
Reply
 
 
 
 
Thread Tools Search this Thread
Old 06-27-2006, 02:07 PM   #1
jbusmc1986
CF Senior Member
St. Jude Donor '06
 
jbusmc1986's Avatar
 
Member Since: Apr 2006
Location: long island NY
Default Ls7 clutch

What is the max hp/tq for an ls7 clutch and what parts are needed for the swap... I will be making about 440/460 na with a 150 shot...Wil the ls7 clutch hold up?
jbusmc1986 is offline   Reply With Quote
Old 06-27-2006, 02:15 PM   #2
ArcticWhiteZ51
CF Senior Member
 
ArcticWhiteZ51's Avatar
 
Member Since: Sep 2000
Location: Austin,TX,USA
Send a message via MSN to ArcticWhiteZ51
Default

Quote:
Originally Posted by jbusmc1986
What is the max hp/tq for an ls7 clutch and what parts are needed for the swap... I will be making about 440/460 na with a 150 shot...Wil the ls7 clutch hold up?
You probably ought to do a search as there are a bazillion recent posts on this subject.
__________________
Regards,

Richard
Austin, TX



Arctic White Z51 Coupe, 2LT, Jet Black, 7-Speed, NPP, Silver Wheels, Red Calipers
ArcticWhiteZ51 is offline   Reply With Quote
Old 06-27-2006, 02:16 PM   #3
Z06ufgrad2002
CF Senior Member
 
Z06ufgrad2002's Avatar
 
Member Since: Nov 2002
Location: Melbourne FL
Default

150 shot on top of 460? No way it will hold that for very long.

I'd say a safe bet would be ~550 fwhp. Beyond that and you'll need something stronger.
Z06ufgrad2002 is offline   Reply With Quote
Old 06-27-2006, 02:43 PM   #4
jbusmc1986
CF Senior Member
St. Jude Donor '06
 
jbusmc1986's Avatar
 
Member Since: Apr 2006
Location: long island NY
Default yikes

That was what I had figured but I hoped that I would be ok... any one know of any alternatives that arent sooo expensive that will hold about 600 rwhp?
jbusmc1986 is offline   Reply With Quote
Old 06-27-2006, 05:54 PM   #5
M_T_0
CF Senior Member
 
Member Since: Oct 2003
Location: San Antonio TX
Default

are you running DR's?
if not the 06 Zo6 clutch should be fine.

Click the image to open in full size.

I'm not running DR's but I have found the clutch to be great and hard to tell from a stock part when driving. BTW TQ is what kills clutches not HP (well that and how you use it)


More Than Zero
__________________
99 B/B/silver vert, MN6, F45 (soon to be F55), z06 bars, z51 springs, A&A tunnel reinforcment, LS7 clutch, LC-1, HPTuners, FLP LT's W/Cats, GHL Mag+, LPE 220/226 114lsa, FFHP stg2.5 heads 2.05/1.6 valves, home ported/shimed oil pump, double roller TC, hardened pushrods, blackwing, SLP maf, Ported TB, I/C Maggie, 2.9 pully, ECS overdrive crank 533rwhp, 580rwtq
M_T_0 is offline   Reply With Quote
Old 06-27-2006, 11:06 PM   #6
Ranger
CF Senior Member
Support Corvetteforum!
 
Ranger's Avatar
 
Member Since: Aug 2000
Default

I have 33 passes on an LS7 clutch and the news is not favorable.

Of the dozen or so C6Z owners that I been to the track with, not one has good things to say about the LS7 clutch.

It should be fine for guys who like to drive on the street. But it hates launches and will glaze at a launch rpm over 3500 and it won't tolerate any slip even at 2500. The pedal gets hung on launch at least 25% of the time.

In contrast, I had 500 launches on C5Z with a stock LS6 clutch and it glazed twice and the pedal stuck once.

So, I don't recommend the LS7 clutch...to anyone that ever intends to launch the car.

Ranger
__________________
'06 Z06 red 300 passes
Bone Stock Stock Tires……11.02 127.25 1.70 video
Bone Stock DRs......….…….10.71 130.32 1.60 video
'02 Z06 350 passes
Bone Stock Stock Tires……11.81 117.26 1.78
w/ CAI & DRs………...........11.52 120.21 1.64 video
My PRs Burnout Launch Shifting Clutch Care
Ranger is offline   Reply With Quote
Old 06-28-2006, 10:52 AM   #7
jbusmc1986
CF Senior Member
St. Jude Donor '06
 
jbusmc1986's Avatar
 
Member Since: Apr 2006
Location: long island NY
Default ooh

well that was kinda what I was expecting and with the hp and torque that I'll have that just wont hold up... I run bfg drags and love the track so I am going to be buying lots of expensive parts soon... to keep up with the go fast parts.
__________________
1999 FRC many things in store...
jbusmc1986 is offline   Reply With Quote
Old 07-18-2006, 11:05 AM   #8
keliente
CF Senior Member
 
keliente's Avatar
 
Member Since: Mar 2005
Location: Mooresville NC
Send a message via AIM to keliente
Default

Quote:
Originally Posted by Ranger
I have 33 passes on an LS7 clutch and the news is not favorable.

Of the dozen or so C6Z owners that I been to the track with, not one has good things to say about the LS7 clutch.

It should be fine for guys who like to drive on the street. But it hates launches and will glaze at a launch rpm over 3500 and it won't tolerate any slip even at 2500. The pedal gets hung on launch at least 25% of the time.

In contrast, I had 500 launches on C5Z with a stock LS6 clutch and it glazed twice and the pedal stuck once.

So, I don't recommend the LS7 clutch...to anyone that ever intends to launch the car.

Ranger
Bump, are there others with the LS7 clutch? I was thinking it would be a good choice until I read Ranger's critique.

I use my car for everything - daily driving, auto cross, and drag racing (in that order) so I need a clutch that can wear many hats as they say I don't plan on making but 400hp if that, and I want to stay away from SPEC because of the horror stories.
keliente is offline   Reply With Quote
Old 07-22-2006, 04:19 PM   #9
Gene@FredBeans
CF Senior Member
 
Member Since: Oct 2003
Location: Limerick Pa
Default

Hi there,
Here is all the recent part number and pricing info!

||--Genuine GM C6 Z06 Clutch Components--||

24237690 – LS7 Clutch
12571611 – LS7 Flywheel

Both LS7 Clutch and LS7 flywheel are 533.30 shipped.
For both clutch and flywheel on our website, use part number ls7clutchkit under Chevrolet make.

89059282 - LS6 Slave Cylinder – 101.83
12564455 - LS6 Master Cylinder – 103.86
14061685 – Pilot Bearing – 9.53

*Clutch does work in any LS1/LS6 drivetrain but must also have ls7 flywheel. Also, can only use LS1/LS6 hydraulics.
Gene@FredBeans is offline   Reply With Quote
Old 07-22-2006, 04:37 PM   #10
willyfastz
CF Senior Member
 
willyfastz's Avatar
 
Member Since: Oct 2005
Location: Vanceboro NC
Default

I don't recommend the LS7 clutch for any car with more than stock power. There's also a lot of post about sticking pedals with the LS7 clutch.
willyfastz is offline   Reply With Quote
Old 07-23-2006, 03:00 AM   #11
SultansDiamond
CF Senior Member
 
SultansDiamond's Avatar
 
Member Since: Jun 2006
Location: Placerville Ca
Default

Quote:
Originally Posted by Ranger
It should be fine for guys who like to drive on the street. But it hates launches and will glaze at a launch rpm over 3500 and it won't tolerate any slip even at 2500. The pedal gets hung on launch at least 25% of the time.

Ranger
Ouch, I'm going in next week for H/C & LS7 clutch on my '02 C5 vert.

Will only be making around 400rwhp after the upgrades and plan to run the 1/4 mile only a couple times for curiousity and bragging rights.

Wanted to do the textrilla, but the installer feels for mostly street driving where slipping the clutch is a regular occurance racing clutches aren't the way to go.

Sound's like you rev up to over 3500 rpm then drop the hammer on launch. That's certainly aggessive driving... plus adding in 33 launches... that's some serious demands from a clutch - any clutch. Just courious, if your that serious a racer... why did you ever choose the LS7 clutch in the first place?

I've heard the pedal hang up thing is a master/slave issue... isn't it fixable?

SultansDiamond is offline   Reply With Quote
Old 07-23-2006, 06:16 AM   #12
Ranger
CF Senior Member
Support Corvetteforum!
 
Ranger's Avatar
 
Member Since: Aug 2000
Default

Quote:
Originally Posted by SultansDiamond
...Sound's like you rev up to over 3500 rpm then drop the hammer on launch. That's certainly aggessive driving... plus adding in 33 launches... that's some serious demands from a clutch - any clutch. Just courious, if your that serious a racer... why did you ever choose the LS7 clutch in the first place?

I've heard the pedal hang up thing is a master/slave issue... isn't it fixable?....
Every clutch has its own characteristics. Clutches made by LUK have a tendency toward pedal issues, with the LS7 version being the worst offender.

The LS7 clutch is just the most finicky i've experienced, and it comes stock on the C6 Z06, so I didn't havve a choice.

The C5 Z06 clutches gave me 150-175 launches at rpm of 4000-5200. So the LS7 clutch is definitely weaker, proportionately.

Hope it works OK for you.

Ranger
Ranger is offline   Reply With Quote
Old 07-23-2006, 06:37 AM   #13
WKMCD
CF Senior Member
 
WKMCD's Avatar
 
Member Since: Dec 2004
Location: Haymarket VA
Default

I've got about 5k on my LS7 clutch with no problems whatsoever. I'm at 460-470RWHP and drive the pi$$ out of it but no track time.
WKMCD is offline   Reply With Quote
Old 07-23-2006, 06:54 AM   #14
Ranger
CF Senior Member
Support Corvetteforum!
 
Ranger's Avatar
 
Member Since: Aug 2000
Default

Quote:
Originally Posted by WKMCD
I've got about 5k on my LS7 clutch with no problems whatsoever. I'm at 460-470RWHP and drive the pi$$ out of it but no track time.
If you ever do take your car to the drag strip and launch with that LS7 clutch, then suggest you
(1) make a very fast release of the clutch pedal, e.g. almost no slip
(2) ensure a launch rpm <3500

That doesn't make for a good 60', but it will keep the clutch from glazing and the pedal from hanging.

Ranger
Ranger is offline   Reply With Quote
Old 07-23-2006, 08:35 AM   #15
6Speeder
CF Senior Member
 
6Speeder's Avatar
 
Member Since: May 2000
Location: Albuquerque NM
Default

Quote:
Originally Posted by SultansDiamond
Ouch, I'm going in next week for H/C & LS7 clutch on my '02 C5 vert.

Will only be making around 400rwhp after the upgrades and plan to run the 1/4 mile only a couple times for curiousity and bragging rights.

Wanted to do the textrilla, but the installer feels for mostly street driving where slipping the clutch is a regular occurance racing clutches aren't the way to go.

Sound's like you rev up to over 3500 rpm then drop the hammer on launch. That's certainly aggessive driving... plus adding in 33 launches... that's some serious demands from a clutch - any clutch. Just courious, if your that serious a racer... why did you ever choose the LS7 clutch in the first place?


I've heard the pedal hang up thing is a master/slave issue... isn't it fixable?

At your power level the Spec Stage II will be fine. I"ve run mine since 2003, including 20 or more 1/4 mile runs, with drag radials. Still works fine.
__________________
Porsches for breakfast
Ferraris for lunch
6Speeder is offline   Reply With Quote
Old 07-23-2006, 08:35 AM
 
Go Back   Corvette Forum > C5 Corvettes, 1997 - 2004 > C5 Tech
Reload this Page Ls7 clutch
 
 
 
Reply

Tags
400, cheap, clucth, clutch, good, hold, hp, ls6, ls7, number, part, sale, stock, work, z06


Thread Tools Search this Thread
Search this Thread:

Click for Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
wanted LS7 clutch kit LMDNC5 C6 Parts for Sale/Wanted 3 12-23-2013 08:34 AM
ls7 clutch on c5 blacknyellow C5 Tech 11 11-23-2013 02:00 PM
What clutch/flywheel is interchangeable? rttmike C5 Tech 3 03-21-2013 11:57 AM
WTB: LS7 Clutch btlegacy C6 Parts for Sale/Wanted 8 03-06-2013 01:28 PM
WTB: slightly used LS7 clutch bstone1989 C5 Parts for Sale/Wanted 2 01-25-2013 01:54 PM


All times are GMT -4. The time now is 12:27 AM.


Emails & Password Backup