Proper flexplate for ZZ4
Thread Starter
Senior Member
Joined: Oct 2003
Posts: 544
Likes: 2
From: Aiken, SC
Car: 91 Z/28, 89 RS Race Car
Engine: 305 stock / ZZ4 AFR 195 9.7:1
Transmission: T5 / t10 / Jerico
Axle/Gears: 10blt w 3.42, 9 in w /3.80 DL
Proper flexplate for ZZ4
I need to know the proper flexplate for the ZZ4.
I need to have the small 152 tooth flexplate with the new crank bolt pattern and the proper counter weight.
I bought a flexplate for a 2000 camaro from the parts house which has the proper bolt patterns and the proper diameter. The counterweight consufuse me as it may only work with an LS1 or LT1. I did not think about this at the time and can take it back.
Reason for needed one...
I am running a lighweight flexplate with a 3 disk clutch and a thick aluminum bell housing / scatter shield that will only take a small flexplate / flywheel.
Last time at the track the car developed a noise in the bell housing. I believe the counterweight that bolts to the clutch pack came loose and going to a factory type flexplate with the weight welded on may be more reliable.
I need to have the small 152 tooth flexplate with the new crank bolt pattern and the proper counter weight.
I bought a flexplate for a 2000 camaro from the parts house which has the proper bolt patterns and the proper diameter. The counterweight consufuse me as it may only work with an LS1 or LT1. I did not think about this at the time and can take it back.
Reason for needed one...
I am running a lighweight flexplate with a 3 disk clutch and a thick aluminum bell housing / scatter shield that will only take a small flexplate / flywheel.
Last time at the track the car developed a noise in the bell housing. I believe the counterweight that bolts to the clutch pack came loose and going to a factory type flexplate with the weight welded on may be more reliable.
Senior Member

Joined: Sep 2006
Posts: 747
Likes: 1
From: Reno, NV
Car: 1982 Z28 & 1967 RR/SS 396
Engine: ZZ383 & 375hp 396
Transmission: T56 & factory TH400
Axle/Gears: 9" ford & 12 bolt 4.10
Re: Proper flexplate for ZZ4
Flexplate's are for automatics
Flywheel's are for a manual transmission.
What one do you need?
Flywheel's are for a manual transmission.
What one do you need?
Thread Starter
Senior Member
Joined: Oct 2003
Posts: 544
Likes: 2
From: Aiken, SC
Car: 91 Z/28, 89 RS Race Car
Engine: 305 stock / ZZ4 AFR 195 9.7:1
Transmission: T5 / t10 / Jerico
Axle/Gears: 10blt w 3.42, 9 in w /3.80 DL
Re: Proper flexplate for ZZ4
I need a flex plate.
My clutch set up works with a flex plate.
The clutch disc is 7.25 inch and has its own flywheel which is also 7.25 and bolts to the crank through the flex plate.
Flexplates their not just for automatics. Think reduction in rotational mass.
My clutch set up works with a flex plate.
The clutch disc is 7.25 inch and has its own flywheel which is also 7.25 and bolts to the crank through the flex plate.
Flexplates their not just for automatics. Think reduction in rotational mass.
Senior Member

Joined: Sep 2006
Posts: 747
Likes: 1
From: Reno, NV
Car: 1982 Z28 & 1967 RR/SS 396
Engine: ZZ383 & 375hp 396
Transmission: T56 & factory TH400
Axle/Gears: 9" ford & 12 bolt 4.10
Re: Proper flexplate for ZZ4
Interesting.
I purchased a ZZ383. It came with a 153 tooth flexplate and I have a manual. If your interested I'll be happy to sell the brand new flexplate really cheep.
PM me if your interested.
I purchased a ZZ383. It came with a 153 tooth flexplate and I have a manual. If your interested I'll be happy to sell the brand new flexplate really cheep.
PM me if your interested.
Last edited by Comp788; Apr 29, 2008 at 11:05 PM. Reason: TYPO on the tooth count
Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Not to nit-pick, but it's either 153-tooth or 168-tooth.
Thread Starter
Senior Member
Joined: Oct 2003
Posts: 544
Likes: 2
From: Aiken, SC
Car: 91 Z/28, 89 RS Race Car
Engine: 305 stock / ZZ4 AFR 195 9.7:1
Transmission: T5 / t10 / Jerico
Axle/Gears: 10blt w 3.42, 9 in w /3.80 DL
Re: Proper flexplate for ZZ4
Keep Nit Pickin!
Thats keeps us honest and on a learning curve!
Thanks I found what I needed.
Many folk say that I have been off by more than a tooth before
Thats keeps us honest and on a learning curve!
Thanks I found what I needed.
Many folk say that I have been off by more than a tooth before
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