This morning I et in my car and cant shift into no gears and the clutch pedal is very soft.
So i figured that its time to get the clutch replaced.
I have a brand new LS7 clutch in my garage that I wanna throw in but before I do that I also wanna put a performance flywheel on the car.
Well what I know about flywheels is that the lighter the better, so I was looking at the Fidanza flywheels. But today 2 Techs at my Job told me get a heavy one.
So the question is what is better a Light one or a Heavy one.
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Last edited by synergy126 : 10-21-2009 at 05:37 PM.
You have a hydraulic problem, your clutch itself is probably fine. However, it's likely that the slave failed (check the fluid level in the reservoir and look for signs of leakage at the bottom of the bellhousing). In that case the trans has to come out so you might as well do the clutch anyway.
And as for the flywheel, lighter isn't always "better", it depends on your application. For a car that is mostly or entirely street driven, a stock weight flywheel will provide the best driveability. The OEM flywheel used with the LS7 clutch is heavier than the stock GTO flywheel.
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Last edited by Fox Mulder : 10-21-2009 at 06:03 PM.
My plans are to get power from the car. I already have ported LS6 heads on it, exhaust, cold air intake, tunning. I drive my car often but not on daily basis. I heard that lighter flywheels will give you more power and the revs of the motor will improve. Now putting a heavier one wouldn't it take away power ???
^ IMO, dont go with a light weight flywheel. When you do the clutch, might as well do SS clutch lines and a remote speed bleeder while you have it apart. I just had mine done last weekend, i also changed out the trans fluid with Redline Synthetic.
^ IMO, dont go with a light weight flywheel. When you do the clutch, might as well do SS clutch lines and a remote speed bleeder while you have it apart. I just had mine done last weekend, i also changed out the trans fluid with Redline Synthetic.
I heard a couple people seay its a heavy car. whats the difference between lighter and heavier im getting confused. What does the weight of the car have to do with the wieght of the flywheel?
Call SNL/ Monster clutches. They can get you set up with what you need. The heavier flywheel carries more inertia, reducing the rpm drop between shifts. It also makes the heavier cars easier to launch. If you plan on drag racing a lot, skip the LS7 clutch and get a Monster.
Then the light-weight flywheel might be best for you, and I would still stay away from the LS7 clutch. Everyone thinks it's so great, but the LS7 Vette guys have been bitching about it since day one. I just don't get it. It is a great stock replacement for a DD if you don't do any sort of motor-sports. Otherwise, get a real clutch that will hold up under the abuse.
I would love to have a Monster but money is tight and I got the LS7 for free. Since I work in a chevy dealer. I guess i'll get the lighter fidanza and for income tax I will drop a monster stage 3 clutch.
Under 40 lbs is where drivability starts suffering. Ls7 with fidanza may be fine... a complete lightweight assembly at 30 lbs or less, starts making things more challenging in traffic.
2004 GTO Owner
Need Help, What flywheel to get heavy or light
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