CorvetteForum - Chevrolet Corvette Forum Discussion

C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

SPEC pressure plate

Thread Tools
 
Search this Thread
 
Old Nov 21, 2008 | 11:19 PM
Share
  #1  
96GS#007's Avatar
96GS#007
Thread Starter
Race Director
 
Joined: Apr 2000
Posts: 15,344
Likes: 4,008
From: Texas
Default SPEC pressure plate
I was wondering if anyone knows what a SPEC pressure plate (not flywheel) weighs for an LT1/4 ZF6 combo. They have lightweight option that saves 3lbs. I sent an e-mail to SPEC but haven't heard back.

I'm trying to find out if the SPEC piece is lighter than OEM and was hoping that with all the projects going on, someone may have one out of the car they could weigh.

Reply
0
Old Nov 21, 2008 | 11:23 PM
Share
  #2  
lltrevino's Avatar
lltrevino
Burning Brakes
10 Year Member
 
Joined: Jan 2007
Posts: 853
Likes: 0
From: Slinger WI
Default
I have a specs Pressure plate, and disc, out of an l98, it is for a black tag, so dont know how big of a difference in weight will be. I could have a weight by sunday pm, if you can wait.
Reply
0
Old Nov 22, 2008 | 12:02 AM
Share
  #3  
BlackHarleyMan's Avatar
BlackHarleyMan
Drifting
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jan 2006
Posts: 1,740
Likes: 2
From: Winchester Virginia
Default
I don't know what the weight of the pressure plate or clutch was. The only advertised SPEC weight that I remember was that of the flywheel. AND NEEDLESS to say, I didn't weigh mine before installation.

Sorry!

N
Reply
0
Old Nov 22, 2008 | 12:22 AM
Share
  #4  
96GS#007's Avatar
96GS#007
Thread Starter
Race Director
 
Joined: Apr 2000
Posts: 15,344
Likes: 4,008
From: Texas
Default
Originally Posted by lltrevino
I have a specs Pressure plate, and disc, out of an l98, it is for a black tag, so dont know how big of a difference in weight will be. I could have a weight by sunday pm, if you can wait.
I can wait, that would be most appreciated!

Reply
0
Old Nov 22, 2008 | 12:23 AM
Share
  #5  
96GS#007's Avatar
96GS#007
Thread Starter
Race Director
 
Joined: Apr 2000
Posts: 15,344
Likes: 4,008
From: Texas
Default
Originally Posted by BlackHarleyMan
I don't know what the weight of the pressure plate or clutch was. The only advertised SPEC weight that I remember was that of the flywheel. AND NEEDLESS to say, I didn't weigh mine before installation.

Sorry!

N
I understand

Still having fun driving that hot rod around aren't you?!
Reply
0
Old Nov 22, 2008 | 11:16 AM
Share
  #6  
BlackHarleyMan's Avatar
BlackHarleyMan
Drifting
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jan 2006
Posts: 1,740
Likes: 2
From: Winchester Virginia
Default
Originally Posted by 96GS#007
I understand

Still having fun driving that hot rod around aren't you?!
Will has it this weekend, I'm heading down to Atlanta to drop of my 91 and bring back my Honda for the Winter driving. It is WAY FUN, and you will LOVE the bump in performance with your setup!

Noland
Reply
0
Old Nov 22, 2008 | 12:31 PM
Share
  #7  
Z51L9889's Avatar
Z51L9889
Pro
15 Year Member
 
Joined: Feb 2005
Posts: 658
Likes: 1
From: Centerville OH
Default
I have a brand new SPEC FW/PP/Stage 3 clutch in the box in the garage for my 89. I'll get you a weight a little later today.
Reply
0
Old Nov 22, 2008 | 12:37 PM
Share
  #8  
96GS#007's Avatar
96GS#007
Thread Starter
Race Director
 
Joined: Apr 2000
Posts: 15,344
Likes: 4,008
From: Texas
Default
Z51L9889, Thank you.

For those that are wondering, I weighed my stock pressure plate and it's 11 lbs
Reply
0
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-1

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-2

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-3

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-4

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-5

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-6

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-7

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

 Michael S. Palmer
story-8

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
story-9

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
Old Nov 22, 2008 | 02:55 PM
Share
  #9  
Z51L9889's Avatar
Z51L9889
Pro
15 Year Member
 
Joined: Feb 2005
Posts: 658
Likes: 1
From: Centerville OH
Default
The pressure plate with the throwout bearing installed weighed 14.5 lbs.

It appears to be a stock Valeo pressure plate.
Reply
0
Old Nov 22, 2008 | 07:04 PM
Share
  #10  
96GS#007's Avatar
96GS#007
Thread Starter
Race Director
 
Joined: Apr 2000
Posts: 15,344
Likes: 4,008
From: Texas
Default
Originally Posted by Z51L9889
The pressure plate with the throwout bearing installed weighed 14.5 lbs.

It appears to be a stock Valeo pressure plate.

Hmmmm. Interesting. I'll have to dig out my throwout bearing and add it to the weight of my pressure plate. Looks like we'll be within a pound or so of each other.

My current pressure plate only has 10k miles on it. I may just use it with a SPEC Stage 2+ clutch disc and the SPEC flywheel. Seems silly to pay a bunch of money for a new pressure plate if they're the same thing.
Last edited by 96GS#007; Nov 23, 2008 at 12:00 AM.
Reply
0
Old Nov 22, 2008 | 09:21 PM
Share
  #11  
Z51L9889's Avatar
Z51L9889
Pro
15 Year Member
 
Joined: Feb 2005
Posts: 658
Likes: 1
From: Centerville OH
Default
I remember hearing somewhere that all ZF6 pressure plate assemblies use the Valeo housing. It's entirely possible that the guts of the assembly are different.
Reply
0

Get notified of new replies

To SPEC pressure plate

Back to Subforum
C4 Tech/Performance
View Next Unread
89 runs better with no gas




Click for Advanced Search
Reply Closed Thread Share
Forum Jump
Trending Topics

All times are GMT -4. The time now is 12:39 PM.

story-0
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-1
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-2
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-3
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-4
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-5
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-6
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-7
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-8
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-9
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