Flexplate
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Senior User
Joined: Mar 2003
Posts: 489
Likes: 1
From: Western Kentucky
Flexplate
I have just broke my 3rd flexplate in 6 years. 
Does anyone know of a good aftermarket flexplate that doesn't cost a fortune? I have found one for around $750, but that is a little higher than I can buy right now.
Does anyone know of a good aftermarket flexplate that doesn't cost a fortune? I have found one for around $750, but that is a little higher than I can buy right now.
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Senior User
Joined: Mar 2003
Posts: 489
Likes: 1
From: Western Kentucky
Yes. Everything is aligned and tight. It breaks around the reinforcement plate. I found article No. 99-23-6 that talks about the issue. I need to purchase new Flywheel Reinforcement Plate, Crankcase Spacer and Engine Spacer.
Fleet Owner
Joined: Jun 2004
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From: Rio Rico, AZ.
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Post Fiend
Joined: Jul 2005
Posts: 14,582
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From: 21791
Sounds like you have a balancing issue, how is the Harmonic damper doing, is it loose or broken? Is the plate breaking right around the center out from the bolt holes?
I am running an ATS billet flexplate only because i picked it up for $400 and plan on running 4500 rpm, and it's just insurance. But, if you keep breaking these stock flex plates at a moderately low HP level, something else is wrong, and a billet flexplate will just mask it
I am running an ATS billet flexplate only because i picked it up for $400 and plan on running 4500 rpm, and it's just insurance. But, if you keep breaking these stock flex plates at a moderately low HP level, something else is wrong, and a billet flexplate will just mask it
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Thread Starter
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Senior User
Joined: Mar 2003
Posts: 489
Likes: 1
From: Western Kentucky
Just installed all the new parts from the TSB. She's up and running again. The crankshaft adapter had a groove around the outside of the old one. New one is straight all across. Groove probably from the other breaks. All parts seem to go together a lot tighter. Hopefully this will cure it for good. Won't know for sure for at least a year.
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Just installed all the new parts from the TSB. She's up and running again. The crankshaft adapter had a groove around the outside of the old one. New one is straight all across. Groove probably from the other breaks. All parts seem to go together a lot tighter. Hopefully this will cure it for good. Won't know for sure for at least a year.