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LS7 Clutch&Flywheel-Expected Changes?

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Old Jun 30, 2010 | 02:19 PM
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Default LS7 Clutch&Flywheel-Expected Changes?

My stock 99 clutch is slipping at the top of second, third and fourth gear, the car has only 24K miles and I'm pretty shocked.

After some reading, I'd like to go with the popular LS7 clutch, flywheel, and pressure plate.What changes could I expect, any negative side effects at all?
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Old Jul 1, 2010 | 04:17 PM
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I just did the same conversion on my 2001 SS...would like to know the same too....thanks for any help
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Old Jul 1, 2010 | 10:38 PM
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get a spacer.
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Old Jul 2, 2010 | 10:45 AM
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Originally Posted by CaliboyTA
get a spacer.
Can u fill us in on what u mean??thanks
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Old Jul 2, 2010 | 03:25 PM
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Originally Posted by 01SLPSS
Can u fill us in on what u mean??thanks
X2?? Also I was told it's a good idea to upgrade to the 01-02 slave as the 98-00 is pretty weak and can barely lift the oe clutch let alone the heavier ls7 unit?
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Old Jul 3, 2010 | 03:02 PM
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Some people have used a shim and others haven't


I've had two LS7 clutch setups in two different cars and never used a spacer. It releases low at first but after a few hundred miles it's back to the stock release point
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Old Jul 3, 2010 | 03:33 PM
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Originally Posted by Z28/2002
Some people have used a shim and others haven't


I've had two LS7 clutch setups in two different cars and never used a spacer. It releases low at first but after a few hundred miles it's back to the stock release point
Ive never heard of anyone having to use a shim on ls7 kit on a f-body .

Its Good do the measurments from the stickies , although I measure and still have problems always
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Old Jul 3, 2010 | 03:44 PM
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I'm really looking for a true bolt in kit, no fawkin around etc. I was always under the impression that the LS7 unit was all bolt in.
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Old Jul 3, 2010 | 06:50 PM
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All the installs I've read about were staright bolt in.
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Old Jul 3, 2010 | 08:15 PM
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Originally Posted by Striker
I'm really looking for a true bolt in kit, no fawkin around etc. I was always under the impression that the LS7 unit was all bolt in.
Its a straight bolt in.

I installed one in my car about 2 years ago, still going strong.
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Old Jul 4, 2010 | 02:09 AM
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Originally Posted by Wesmanw02
Its a straight bolt in.

I installed one in my car about 2 years ago, still going strong.
Thanks dude. Did you replace your pilot bearing too? If so, do you have to get a LS7 specific one or just a reg LS1 pilot bearing?
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Old Jul 4, 2010 | 08:57 AM
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Originally Posted by Striker
Thanks dude. Did you replace your pilot bearing too? If so, do you have to get a LS7 specific one or just a reg LS1 pilot bearing?
reg ls1 pilot bearing
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Old Jul 4, 2010 | 09:40 AM
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I'm talking about guys shimming the slave cylinder to get the pedal to release higher, not the clutch itself.
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Old Jul 4, 2010 | 10:19 AM
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Im running thw LS7 set up in my 01 SS for 3+ now it a good dd clutch and minor track use. Only down side to it I feel is that is weighs alot more then the stock and other aftermarket clutch witch in return eats up some hp at the wheels,again not a big deal if you mainly just dd your car but for more strip use I would go with something else . Also the spacer does help.
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Old Jul 4, 2010 | 11:02 AM
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It weights more? I drove a C6 Z06 and the pedal was lighter than my 99 clutch.
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Old Jul 4, 2010 | 11:54 AM
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yes ask any speed shop they will tell you that it is a heavier clutch setup.
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Old Jul 4, 2010 | 05:24 PM
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Originally Posted by 01SS99red
Im running thw LS7 set up in my 01 SS for 3+ now it a good dd clutch and minor track use. Only down side to it I feel is that is weighs alot more then the stock and other aftermarket clutch witch in return eats up some hp at the wheels,again not a big deal if you mainly just dd your car but for more strip use I would go with something else . Also the spacer does help.
Realy, how much heavier?

I just ordered mine from scoggin with the RAM lightweight flywheel. So I hope that makes up for the differance in weight.
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Old Jul 4, 2010 | 06:29 PM
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He means rotating mass, not pedal feel...it's physically got more material in the flywheel/pressure plate, so it's got more rotational inertia...which will actually make it nicer to drive around town.
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Old Jul 4, 2010 | 06:31 PM
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The LS7 clutch is a great clutch for the money. I've had mine in for 7K with every type of driving possible.

As far as the heavier flywheel, that's not a big deal. It actually makes the car easier to drive in real world daily driver situations. Uphill ... stop and go traffic ... etc.

The problem most have with the low peddle syndrom is the varying dimensions in length that exist between the hydraulics. You can do a search regarding this problem. One of our members who is also a vendor GEN414 did a write-up about this problem.

I initially had the lower peddle issues with the LS7 clutch and solved them with the Tick m/c.

With all the above said, If you are looking to do a lot of dragracing or hardroad racing than this clutch probably isn't for you... For an occasional launch, spirited driving, daily driving, long trips... this cluth is for you.

Whenever my current LS7 clutch wears out, I will install another.


Hope this helps.


.
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Old Jul 4, 2010 | 11:15 PM
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Originally Posted by Striker
Thanks dude. Did you replace your pilot bearing too? If so, do you have to get a LS7 specific one or just a reg LS1 pilot bearing?
Yes, I replaced the pilot bearing. It was a pain to get out of the crank, took forever using a pilot bearing puller. Slide hammer would have probably worked better. I installed a new one for an LS1, but one for an LS7 is most likely the same anyway.
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