Dose any one use one and how do they like it?
Also, what spec clutch would be right for me? My car is mostly stock, its my daily driver in spring, summer and fall and i go to the strip about 5 or 6 times a year.

 

Spec uses very tiny springs in their clutches, at least in their 6-puck Stage 3. Went through 1 from Sept to Jan (caused by bad pilot bearing and tranny) rebuilt everything with pilot bushing instead of bearing so less play, then in July went through another one, both times blowing the springs. Had the transmission checked for excessive play or runout, was still within factory specs.

So I decided to do some research, made some calls, turns out, Spec uses the SAME spring center hubs from their 4-cyl clutches as on their LT1 clutches. Didn't believe local clutch shop till he showed me them side by side. Made in China part also. No more Spec for me, going to get something that holds up next time. This was on a basically stock daily driven car with only intake and catback mods and NO track time or racing.

Also, apparently these things last up to about 10K or so fine, then you have problems with the springs, which SPEC always will tell you is a input shaft problem because their clutches aren't faulty. They will warranty or pro-rate the clutch WHEN it does blow, cust serv is good, but the product is crap. If you are able to check out their 4-cyl clutches or even just compare how cheap and tiny the Spec springs are to even a stock or ANY other aftermarket clutch for LT1, you will see what I mean.

YOU HAVE BEEN WARNED.

Edit: Didn't notice you had LS1, they may have been made better for them, but LT1 Stage 3=Garbage

 

I just checked out the fourm on ls1.com and i see nothing but good things about the specs. I guess they must be diffrent than the lt1 clutches.
A few more qs...
Where is the best place to get the clutch from?
Will the stage 3 be to much to handle for the street?