Clutch?

**Wesman** · 01-31-2009, 07:28 PM

Originally Posted by Bearcat

Yep, I have a Spec I with 1000 miles or 6 months.
It was my first and will be my last Spec clutch.

Replaced all the hydraulics (brand new pre-bled GM), new flywheel,
new pressure/plate, disc, locktite and proper torque.

It shifts great but it's already starting to slip at 5th and 6th at low RPMs.
I'm fairly sure the provided shim is the problem, it might be slightly pushing
the throwout bearing into the pressure/plate fingers.

.

Amazing how you can do everything right by the book, and still have problems. I think its obvious what the issue is, and its not the installation, its the product.

If I kept track of all the people that I've heard of installing spec clutches and having them burn up within a few thousand miles I'd have quite a compliation.

**Bearcat** · 01-31-2009, 09:08 PM

Originally Posted by Wesman

Amazing how you can do everything right by the book, and still have problems. I think its obvious what the issue is, and its not the installation, its the product.

If I kept track of all the people that I've heard of installing spec clutches and having them burn up within a few thousand miles I'd have quite a compliation.

Besides having quite a compliation, it would be nice to have a dollar
for every spec that failed after a few thousand miles.

Darn, I knew I should've bought an LS7 clutch kit instead. lol

.

**anniversary30** · 01-31-2009, 10:12 PM

I took a spec out after I bought mine, Garbage. I planned to make more power so I put a textrailla in mine. Been great, going strong after 18000 miles . still grabs like new at the track. little expensive but my opinion is over do it and you shouldn't have to worry for a long time unless you can't drive.

**INMY01TA** · 02-03-2009, 04:34 PM

I would not put a SPEC clutch in my car.

**Bearcat** · 02-03-2009, 07:10 PM

It's refreshing to be honest about how bad these Spec clutches really are.
On the other Ls1 forum it's almost taboo to mention the truth about Specs.

Also on the other LS1 forum, there is member and/or ex-sponsor that goes
by the name of Spec-01. He always seems to makes post defending his
product.

I know Spec sells alot of clutches. But I've been asking myself. Is it bad
engineering, materials or both ? I was also wondering if Spec clutches have incompatibility issues with the hydraulics on our cars.

.

**INMY01TA** · 02-03-2009, 07:18 PM

Well I've been following these boards for 9 years now. I'd say prolly 28 out of 30 posts I''ve read over the years about aftermarket clutch issues were SPEC clutches. Sure some people have no issues, too few and far between for my taste. When I read of someone having problems with one now I have no sympathy for them as I've been saying this for years.