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

Clutch specs. 89-93 vs. 94-96. Diff ??

Thread Tools
 
Search this Thread
 
Old Dec 15, 2003 | 03:31 PM
  #1  
BlackBeast2's Avatar
BlackBeast2
Thread Starter
Pro
 
Joined: Apr 2003
Posts: 603
Likes: 0
From: Atlanta
Default Clutch specs. 89-93 vs. 94-96. Diff ??

Well, mine's going. (its always something with these cars, right?) So I'm looking through all the various catalogs and I see where a few aftermarket manufacturers (RAM , LUK) cut off their C4 clutch offerings at model year 1993. (five years into ZF production). Was there a big change to the 94-96 ZF which made its clutch unique ?

I currently am running a single-mass 153 tooth (4+3) flywheel, and I'm sure my original clutch would have had to been changed at that time (previous owner).

I will probably do it right this time and go with a Fidanza aluminum 153t flywheel, heavy duty clutch and pressure plate (RAM or Centerforce), replace the throwout bearing and pivot ball, then fill her up with RedLine.


Need some feedback guys. Thanks.


:cheers:
Reply
Old Dec 15, 2003 | 06:52 PM
  #2  
Strick's Avatar
Strick
Race Director
20 Year Member
All Eyes On Me
Liked
Loved
 
Joined: Feb 2003
Posts: 11,672
Likes: 20
From: Lake Wylie SC
Default Re: Clutch specs. 89-93 vs. 94-96. Diff ?? (BlackBeast2)

I'm in the market for a clutch, too. Here's what I've found out so far; I have the OEM flywheel and clutch. I had an oil leak when I bought it and have since fixed the leak, but not before the clutch got oil soaked. :( I'm hoping the OEM flywheel is not damaged, but if it is, I plan on replacing it with the Fidanza Dual-Mass Aluminum which must be matched balanced to the OEM flywheel. (Mine is a 92 and is not internally balanced) As far as the clutch replacement goes, I'm sticking with the OEM clutch as it is the same as the ZR1 clutch and I don't have over 400 HP. There is a lot of guys using Centerforce clutches that are not really satisfied :confused: That's where I am right now. It still works as long as I don't try burnouts or power shifts. :cheers:
Reply
Old Dec 15, 2003 | 07:26 PM
  #3  
SPD DMN's Avatar
SPD DMN
Le Mans Master
20 Year Member
 
Joined: Oct 1999
Posts: 9,713
Likes: 3
From: Sachse Texas
Cruise-In I Veteran
Cruise-In II Veteran
Default Re: Clutch specs. 89-93 vs. 94-96. Diff ?? (BlackBeast2)

The only difference in the 89-93 and the 94-96 is that the late model uses a different sized inside diameter throwout bearing. Other than that they are identical. The LT4 is supposed to have a little more holding power in the pressure plate but I have never seen proof.

McCleod makes a very nice replacement clutch. I personally will never run an aluminum flywheel though. Heard of too many of them coming apart.
Reply
Old Dec 15, 2003 | 07:46 PM
  #4  
BlackBeast2's Avatar
BlackBeast2
Thread Starter
Pro
 
Joined: Apr 2003
Posts: 603
Likes: 0
From: Atlanta
Default Re: Clutch specs. 89-93 vs. 94-96. Diff ?? (Vette92)

I personally will never run an aluminum flywheel though. Heard of too many of them coming apart.
:eek: That could truely get ugly. I like my feet the way they are. Your words are always wise Vette92. Hays makes a nice billet steel model in 153t or 168t, maybe I'll check it out. Its a hundred bucks less anyway. BTW does Lakewood or anybody make a bellhousing for the ZF ? And, where would you recommend getting a McCleod clutch kit from ?

Thanks. I've done a few clutch / flywheel swaps with Mustangs, but the ZF with its differences and particulars has me going back to the drawing board. Especially considering mine has been slightly modified before.

Srick, I didn't know the Fidanza has to be balanced with some models, but I hadn't done that much research yet. And what kind of complaints are guys having with the Centerforce? (besides its too expensive).
Reply
Old Dec 15, 2003 | 08:26 PM
  #5  
Strick's Avatar
Strick
Race Director
20 Year Member
All Eyes On Me
Liked
Loved
 
Joined: Feb 2003
Posts: 11,672
Likes: 20
From: Lake Wylie SC
Default Re: Clutch specs. 89-93 vs. 94-96. Diff ?? (BlackBeast2)

If you look back a few weeks there is quite a few runs with guys saying that they don't last very long, but they were doing some serious drag racing.
Reply
Old Dec 16, 2003 | 12:01 AM
  #6  
SPD DMN's Avatar
SPD DMN
Le Mans Master
20 Year Member
 
Joined: Oct 1999
Posts: 9,713
Likes: 3
From: Sachse Texas
Cruise-In I Veteran
Cruise-In II Veteran
Default Re: Clutch specs. 89-93 vs. 94-96. Diff ?? (BlackBeast2)

That could truely get ugly. I like my feet the way they are. Your words are always wise Vette92. Hays makes a nice billet steel model in 153t or 168t, maybe I'll check it out. Its a hundred bucks less anyway. BTW does Lakewood or anybody make a bellhousing for the ZF ? And, where would you recommend getting a McCleod clutch kit from ?

Thanks. I've done a few clutch / flywheel swaps with Mustangs, but the ZF with its differences and particulars has me going back to the drawing board. Especially considering mine has been slightly modified before.
I know of no aftermarket bellhousings for the ZF.

If you are looking at swapping to a single mass flywheel, the best option IMO is to get the Camaro setup from Chris May at Superior. (800-728-8267) Then just order the clutch disk/pressure plate/throwout bearing from Summit. You can call McCleod directly to get the right part numbers.

If you want a single source of all the parts, then McCleod also has a steel flywheel too, but it is a little more $. Just tell them it is stock balanced and they will probably send it where you can just bolt it on without having to worry about the balance.

If you want to stick with the dual mass flywheel, then you can just get a clutch disk/pressure plate/throwout bearing assembly and reuse the stock flywheel if it is in good shape.
Reply

Get notified of new replies

To Clutch specs. 89-93 vs. 94-96. Diff ??





All times are GMT -4. The time now is 08:53 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
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-9
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