LS7 flywheel info needed
Thread Starter
Racer
Joined: Aug 2009
Posts: 294
Likes: 5
From: Caledonia Ms
LS7 flywheel info needed
recently i purchased a ls7 clutch from a forum member. the flywheel gm part number that i got with the clutch is 120496901. ive tried to look this number up on gm part sites and it doesnt come up. from what i can see the ls7 flywheel part number should be 12571611. anyone know anything about the flywheel i have? is it an ls7 flywheel? i was under the impression the ls7 flywheels where lighter...i think this is actually heavier than the ls6 flywheel. just by holding the 2 and comparing. appreciate any info or help here.
thanks
matt
thanks
matt
Tech Contributor
Joined: May 2008
Posts: 2,843
Likes: 16
From: Howell Michigan
St. Jude Donor '09-'10-'11
recently i purchased a ls7 clutch from a forum member. the flywheel gm part number that i got with the clutch is 120496901. ive tried to look this number up on gm part sites and it doesnt come up. from what i can see the ls7 flywheel part number should be 12571611. anyone know anything about the flywheel i have? is it an ls7 flywheel? i was under the impression the ls7 flywheels where lighter...i think this is actually heavier than the ls6 flywheel. just by holding the 2 and comparing. appreciate any info or help here.
thanks
matt
thanks
matt
Thread Starter
Racer
Joined: Aug 2009
Posts: 294
Likes: 5
From: Caledonia Ms
Tech Contributor
Joined: May 2008
Posts: 2,843
Likes: 16
From: Howell Michigan
St. Jude Donor '09-'10-'11
Tech Contributor
Joined: Jan 2007
Posts: 19,341
Likes: 1,122
From: Dyer, IN
Unless something has changed, I believe the casting number and part number are different for the LS flywheels. I double checked my old LS1 flywheel, and the number cast into it, does not match the GM part number in the parts manual.
Tech Contributor
Joined: May 2008
Posts: 2,843
Likes: 16
From: Howell Michigan
St. Jude Donor '09-'10-'11
Yeah, I believe you are correct. What I can do is look the print up for the flywheel, The prints sometimes include the casting number. I can also get the nominal weight as well.
Tech Contributor
Joined: May 2008
Posts: 2,843
Likes: 16
From: Howell Michigan
St. Jude Donor '09-'10-'11
Mass of LS7 to LS6/LS1 flywheel - LS7= 26.5 lbs - LS6/LS1= 25.1 lbs
If there is a Luk number for LS7 in casting it should be A1904974 or something like this.
For current LS6/LS1 flywheel part number, 12551348
For current LS7 the flywheel part number, 12571611
Hope this is of some help..
If there is a Luk number for LS7 in casting it should be A1904974 or something like this.
For current LS6/LS1 flywheel part number, 12551348
For current LS7 the flywheel part number, 12571611
Hope this is of some help..
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Thread Starter
Racer
Joined: Aug 2009
Posts: 294
Likes: 5
From: Caledonia Ms
Mass of LS7 to LS6/LS1 flywheel - LS7= 26.5 lbs - LS6/LS1= 25.1 lbs
If there is a Luk number for LS7 in casting it should be A1904974 or something like this.
For current LS6/LS1 flywheel part number, 12551348
For current LS7 the flywheel part number, 12571611
Hope this is of some help..
If there is a Luk number for LS7 in casting it should be A1904974 or something like this.
For current LS6/LS1 flywheel part number, 12551348
For current LS7 the flywheel part number, 12571611
Hope this is of some help..
