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

Flex plate ??

Thread Tools
 
Search this Thread
 
Old Mar 4, 2011 | 02:36 PM
  #1  
twin540's Avatar
twin540
Thread Starter
Pro
10 Year Member
 
Joined: Feb 2007
Posts: 740
Likes: 2
From: San Antonio TX
Default Flex plate ??

Can someone one help me out . How many tooth on a 91 corvette flex plate 153 or 171. Thanks in advanced
Reply
Old Mar 4, 2011 | 02:37 PM
  #2  
383vett's Avatar
383vett
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2003
Posts: 17,692
Likes: 1,664
From: moraga ca
Default

153
Reply
Old Mar 4, 2011 | 02:39 PM
  #3  
twin540's Avatar
twin540
Thread Starter
Pro
10 Year Member
 
Joined: Feb 2007
Posts: 740
Likes: 2
From: San Antonio TX
Default

That was quick. thanks
Reply
Old Mar 4, 2011 | 02:53 PM
  #4  
twin540's Avatar
twin540
Thread Starter
Pro
10 Year Member
 
Joined: Feb 2007
Posts: 740
Likes: 2
From: San Antonio TX
Default

One more question do i have to move the tranny or do i have enough room to get it out by just removing torque converter bolts.
Reply
Old Mar 5, 2011 | 12:32 PM
  #5  
twin540's Avatar
twin540
Thread Starter
Pro
10 Year Member
 
Joined: Feb 2007
Posts: 740
Likes: 2
From: San Antonio TX
Default

All that labor. Can anyone recommend a good flexplate internal balance 153t

Reply
Old Mar 5, 2011 | 01:31 PM
  #6  
383vett's Avatar
383vett
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2003
Posts: 17,692
Likes: 1,664
From: moraga ca
Default

You can push the torque converter back only about 1/8 of an inch without removing the transmission. You wouldn't be able to access the flexplate bolts with a wrench and definitely wouldn't be able to remove the bolts. The tranny needs to be pushed back about 3" at least. I use a Hays SFI approved flexplate.

Last edited by 383vett; Mar 5, 2011 at 02:17 PM.
Reply
Old Mar 5, 2011 | 02:15 PM
  #7  
twin540's Avatar
twin540
Thread Starter
Pro
10 Year Member
 
Joined: Feb 2007
Posts: 740
Likes: 2
From: San Antonio TX
Default

Reply
Old Mar 5, 2011 | 10:53 PM
  #8  
twin540's Avatar
twin540
Thread Starter
Pro
10 Year Member
 
Joined: Feb 2007
Posts: 740
Likes: 2
From: San Antonio TX
Default

I've seen some advertise better 60ft with there $200 flexplate, is that true?
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

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

 Joe Kucinski
story-1

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

 Michael S. Palmer
story-2

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

 Joe Kucinski
story-3

7 Bolt-On Upgrades From Extreme Online Store to Level Up Your C6 Corvette

 Pouria Savadkouei
story-4

How Likely Are These Five 2027 Corvette Rumors to Be True?

 Brett Foote
story-5

9 Best Corvettes You Can Buy for Half Price (& 1 You Should NEVER Buy!)

 Joe Kucinski
story-6

8 Very Best Corvettes of Amelia Island 2026

 Joe Kucinski
story-7

Top 10 WORST Corvette Engineering Failures of All Time!

 Joe Kucinski
story-8

10 Records the C8 Corvette Generation Has SMASHED (& 1 Glaring Failure)

 Joe Kucinski
story-9

7 Wildest Corvette Concepts Ever Made

 Brett Foote
Old Mar 5, 2011 | 11:46 PM
  #9  
383vett's Avatar
383vett
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2003
Posts: 17,692
Likes: 1,664
From: moraga ca
Default

I hadn't heard that. If it's true, I'm first in line. Willie
Reply
Old Mar 6, 2011 | 11:59 AM
  #10  
twin540's Avatar
twin540
Thread Starter
Pro
10 Year Member
 
Joined: Feb 2007
Posts: 740
Likes: 2
From: San Antonio TX
Default

I know what you mean i'm just trying to get the best one . The labor sucks so if i can improve while repairing it why not.
Reply
Old Mar 6, 2011 | 12:19 PM
  #11  
Muffin's Avatar
Muffin
Race Director
Supporting Lifetime Gold
10 Year Member
 
Joined: Jun 1999
Posts: 14,924
Likes: 9
From: Merritt Ils Fl
Default

Removal, Haven't done it on the Vette but did on an Impala. Get 4 grade 8 bolts 3/8 X 16 4 inches long. Remove drive shaft. With the trans supported remove all 6 bell housing bolts. Replace two lower and two middle bolts with 4 inchers. With TC loosened slide the trans back 3 inches. Keep it supported. R&R flex plate, slide trans forward bolt up. Might sound complicated but the method does work. I have done two like this, last one took something like 4 hours.
Reply
Old Mar 6, 2011 | 12:50 PM
  #12  
twin540's Avatar
twin540
Thread Starter
Pro
10 Year Member
 
Joined: Feb 2007
Posts: 740
Likes: 2
From: San Antonio TX
Default

I have it out i'm just trying to find the best one for my application.
Reply

Get notified of new replies

To Flex plate ??





All times are GMT -4. The time now is 10:06 AM.

story-0
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-1
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-2
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
story-3
7 Bolt-On Upgrades From Extreme Online Store to Level Up Your C6 Corvette

Slideshow: Check out these easy-to-install upgrades from Extreme Online Store that reshape the look and feel of the C6 Corvette.

By Pouria Savadkouei | 2026-03-23 17:00:27


VIEW MORE
story-4
How Likely Are These Five 2027 Corvette Rumors to Be True?

There may be some big changes on the horizon.

By Brett Foote | 2026-03-18 06:55:42


VIEW MORE
story-5
9 Best Corvettes You Can Buy for Half Price (& 1 You Should NEVER Buy!)

Slideshow: 9 best Corvettes you can buy for half price (and 1 you shouldn't!)

By Joe Kucinski | 2026-03-17 10:20:26


VIEW MORE
story-6
8 Very Best Corvettes of Amelia Island 2026

Slideshow: 8 best Corvette of Amelia Island 2026

By Joe Kucinski | 2026-03-11 09:28:52


VIEW MORE
story-7
Top 10 WORST Corvette Engineering Failures of All Time!

Slideshow: Top 10 worst Corvette engineering failures

By Joe Kucinski | 2026-03-10 17:38:03


VIEW MORE
story-8
10 Records the C8 Corvette Generation Has SMASHED (& 1 Glaring Failure)

Slideshow: 10 records the C8 Corvette generation has SMASHED (& 1 glaring failure).

By Joe Kucinski | 2026-03-02 11:16:36


VIEW MORE
story-9
7 Wildest Corvette Concepts Ever Made

Out of the many Corvette concepts that exist, these are by far the wildest of the bunch.

By Brett Foote | 2026-03-02 11:03:54


VIEW MORE