LS7 clutch + LS1 flywheel, will this work?
Thread Starter
Melting Slicks
Joined: Jan 2001
Posts: 2,635
Likes: 2
From: Aloha, Oregon
LS7 clutch + LS1 flywheel, will this work?
I am getting conflicting info on this. Gene at FredBeans Pontiac/GMC says yes. Some members here say No, that an LS2 flywheel needed. I've been lead to believe that LS1 and LS2 flywheels are compatible, therefore, either should work with the new LS7 clutch?.Gotta now fast. Thanks.
Robert
www.gen3motorsports.com
Robert
www.gen3motorsports.com
Safety Car
Joined: Jan 2001
Posts: 3,879
Likes: 3
From: Hobart, WI
I have read and seen pictures that show that the LS7 flywheel has a larger friction area machined into it for increased disc contact. Looks like the setup with the LS7 flywheel as GM usually sells them is a good, cheap solution.
http://www.ls1tech.com/forums/showthread.php?t=368318
http://www.ls1tech.com/forums/showthread.php?t=368318
Last edited by see5; Sep 9, 2005 at 07:48 AM.
Melting Slicks
Joined: Mar 2003
Posts: 2,744
Likes: 9
From: FL
Cruise-In VI Veteran
From what I have read, not a stock LS1/LS6 flywheel... The difference is that the LS2/LS7 flywheel has raised mounting points. So it will bolt up to the stock LS1/LS6 flywheel, but the PP wont be as close to the surface and disc wont be contacting the surface of the flywheel.
Check this out on ls1tech http://www.ls1tech.com/forums/showthread.php?t=372770
Check this out on ls1tech http://www.ls1tech.com/forums/showthread.php?t=372770
Instructor
Joined: Mar 2003
Posts: 124
Likes: 0
From: Irvine CA
I also found the following information in the below link:
http://www.ls1tech.com/forums/showth...8&page=2&pp=20
From Bearman over at LS7power.com:
"The LS7 pressure plate has a self adjusting feature that might be the reason for the gappage he is seeing. There are toothed fingers on the top surface that all need to have at least one tooth showing to be good. Tell him to not fiddle with the autoadjusters because if any of the fingers do not show at least one tooth, it is no good. Is he also using a LS7 clutch plate??? I do believe that the flywheels are interchangable. I will check with the LS7 DRE and ask him tomorrow."
Originally Posted by Bearman
As for the "fingers", I misnamed them. If you look at the purple line on the LS7 pressure plate, just to the right and below a bit, you will see teeth in a oval cut slot. There the same slots all the way around the pressure plate. In there are the teeth I spoke of. From the picture, I see that they are all exposing more than one tooth.
I discussed the gap problem with the other builders and we all agree that the only way that could happen is if he installed the clutch plate backwards. The plate is marked "flywheel side". Have him check that. Other than that, it is supposed to fit."
http://www.ls1tech.com/forums/showth...8&page=2&pp=20
From Bearman over at LS7power.com:
"The LS7 pressure plate has a self adjusting feature that might be the reason for the gappage he is seeing. There are toothed fingers on the top surface that all need to have at least one tooth showing to be good. Tell him to not fiddle with the autoadjusters because if any of the fingers do not show at least one tooth, it is no good. Is he also using a LS7 clutch plate??? I do believe that the flywheels are interchangable. I will check with the LS7 DRE and ask him tomorrow."
Originally Posted by Bearman
As for the "fingers", I misnamed them. If you look at the purple line on the LS7 pressure plate, just to the right and below a bit, you will see teeth in a oval cut slot. There the same slots all the way around the pressure plate. In there are the teeth I spoke of. From the picture, I see that they are all exposing more than one tooth.
I discussed the gap problem with the other builders and we all agree that the only way that could happen is if he installed the clutch plate backwards. The plate is marked "flywheel side". Have him check that. Other than that, it is supposed to fit."
Instructor
Joined: Mar 2003
Posts: 124
Likes: 0
From: Irvine CA
97C5ENVY,
Do you know who said "no"? There are a bunch of people in the other forum trying to find out who said that it is not working. It will be good to know who tried this configuration and some specs about the issue.
Thanks for your help.
M.
Do you know who said "no"? There are a bunch of people in the other forum trying to find out who said that it is not working. It will be good to know who tried this configuration and some specs about the issue.
Thanks for your help.
M.
Melting Slicks
Joined: May 2000
Posts: 2,974
Likes: 5
From: CenTex Texas
Originally Posted by blackbullet
97C5ENVY,
Do you know who said "no"? There are a bunch of people in the other forum trying to find out who said that it is not working. It will be good to know who tried this configuration and some specs about the issue.
Thanks for your help.
M.
Do you know who said "no"? There are a bunch of people in the other forum trying to find out who said that it is not working. It will be good to know who tried this configuration and some specs about the issue.
Thanks for your help.
M.
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Instructor
Joined: Mar 2003
Posts: 124
Likes: 0
From: Irvine CA
Originally Posted by 97C5ENVY
Gene@fredbean told me in a emal conversation we had a few days ago that an LS2/7 flywheel will be needed with the LS7 clutch.
I talked to Gene today and I am getting the clutch today. I will post the results soon. Thanks for for all the information!!!M.
Instructor
Joined: Mar 2003
Posts: 124
Likes: 0
From: Irvine CA
I noticed some sad faces...I am assuming this is because some people are waiting to get the results.
I got the parts 2 days ago. As soon as Robert and I can get together, he will assess if we can install this set up and I will let you know. It may still take 1-2 weeks but as soon as we know, we will come back and put the results right here.
Talk to you soon!
M.
I got the parts 2 days ago. As soon as Robert and I can get together, he will assess if we can install this set up and I will let you know. It may still take 1-2 weeks but as soon as we know, we will come back and put the results right here.
Talk to you soon!
M.
Advanced
Joined: Feb 2005
Posts: 58
Likes: 0
From: Denver CO
Mas over on LS1tech got his setup back in the car and bled the clutch. Said it feels close to LS6 stock but releases about 15% higher. So far so good.
I cheated and ordered up the Textraila, but think this would be a nice setup also.
I cheated and ordered up the Textraila, but think this would be a nice setup also.
Instructor
Joined: Mar 2003
Posts: 124
Likes: 0
From: Irvine CA
Hi all,
Robert and I checked the parts today. We have not found a way to make the LS7 clutch work with an LS1 Fidanza Aluminum flywheel.
Robert can share additional details but I am going to get an LS2 flywheel.
Best regards,
M.
Robert and I checked the parts today. We have not found a way to make the LS7 clutch work with an LS1 Fidanza Aluminum flywheel.
Robert can share additional details but I am going to get an LS2 flywheel.
Best regards,
M.
Thread Starter
Melting Slicks
Joined: Jan 2001
Posts: 2,635
Likes: 2
From: Aloha, Oregon
Originally Posted by blackbullet
Hi all,
Robert and I checked the parts today. We have not found a way to make the LS7 clutch work with an LS1 Fidanza Aluminum flywheel.
Robert can share additional details but I am going to get an LS2 flywheel.
Best regards,
M.
Robert and I checked the parts today. We have not found a way to make the LS7 clutch work with an LS1 Fidanza Aluminum flywheel.
Robert can share additional details but I am going to get an LS2 flywheel.
Best regards,
M.
Robert
