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

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Old Aug 16, 2007 | 09:08 PM
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I have a 1990 corvette with a 6 speed. What do I have to do to change from a dual mass flywheel to a one piece flywheel set up. Thanks. Doctorg17.
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Old Aug 16, 2007 | 09:14 PM
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the best bet is to stick with the DM. Unless you are into hard core road racing, it's the best street option.

otherwise, get a centerforce steel unit... and match balance the puppy.

I think you can use the F-body SMFW, too. That would require .090 machined off, then have it match balanced.
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Old Aug 16, 2007 | 10:39 PM
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Originally Posted by DoctorG17
I have a 1990 corvette with a 6 speed. What do I have to do to change from a dual mass flywheel to a one piece flywheel set up. Thanks. Doctorg17.
It depends on what you want to do with the car. The cheapest and possibly easiest option is the LT1 Camaro or Firebird flywheel. Any flywheel from a 6 speed, V8, 1993-1997 Camaro or Firebird will work for this conversion. You'll need to have a machine shop remove .090 from the flywheel, then you'll use your stock clutch disk and pressure plate.

There are a ton more options out there though, all with pros and cons. I do kind of agree with Bogus, unless you plan to abuse the car heavily on the street or take it to some sort of racing venue, replacing the dual mass with another dual mass might be the best option.

There are a lot of relatively new options out there from McLeod, including using the stock dual mass and pressure plate with a hardened clutch disk. For most people, that set up would be more than enough.

Are you looking for every inch out of the car, more holding power, or just to install something that is a moderate upgrade from stock?
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Old Aug 18, 2007 | 09:12 PM
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Originally Posted by neat
It depends on what you want to do with the car. The cheapest and possibly easiest option is the LT1 Camaro or Firebird flywheel. Any flywheel from a 6 speed, V8, 1993-1997 Camaro or Firebird will work for this conversion. You'll need to have a machine shop remove .090 from the flywheel, then you'll use your stock clutch disk and pressure plate.

There are a ton more options out there though, all with pros and cons. I do kind of agree with Bogus, unless you plan to abuse the car heavily on the street or take it to some sort of racing venue, replacing the dual mass with another dual mass might be the best option.

There are a lot of relatively new options out there from McLeod, including using the stock dual mass and pressure plate with a hardened clutch disk. For most people, that set up would be more than enough.

Are you looking for every inch out of the car, more holding power, or just to install something that is a moderate upgrade from stock?
Im puting in a 383 ci . Just want to have fun with this car. I was told this was not the best setup. I though of going with a alum flywheel thanks doctorg17.
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Old Aug 19, 2007 | 09:06 AM
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Originally Posted by DoctorG17
I have a 1990 corvette with a 6 speed. What do I have to do to change from a dual mass flywheel to a one piece flywheel set up. Thanks. Doctorg17.
If you go with a single mass ... There is one thing you absolutely must do to retain your sanity, and preserve your input shaft splines ... get a clutch disk that has springs in the hub. Clutch disks that are listed for 93-97 Camaro Z28s are the ones that you need. To avoid resonance with the ZF6: Among the available clutch disks with springs, it is best to avoid ones that have plastic or urethane overmolding on some of the springs (Mcleod and RAM).
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Old Aug 19, 2007 | 02:30 PM
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i just put a fidanza aluminum flywheel with a corvette central stage three clutch, which is pretty much over kill a stage two would be a better idea, but i don't really have a problem with it.. its is kinda noisy at idle but steels are supposedly quieter. i don't drive the car everyday, well i do but don't need to so its not a big deal cause whenever i am just sitting i usually have the clutch pressed in anyway so its not too often i have to listen to the rock crusher. but if you got the f body flywheel route you still need to run a corvette pressure plate with a f body friction disk. corvette central and carolina clutch have the clutch kits and spec or fidanza has the correct flywheels.
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