I was wondering if anyone knows the clenching strength of the stock 09 ss clutch assembly in lbs and if anyone knows the clenching strengths of the leading aftermarket clutches. I have researched and haven't been able to find much besides word of mouth on who is better. for myself I'd just like to see some numbers.

 

Stock PP is 1800 lbs. ZZP offers a 1900 and a 2200(?). Clutchmasters states their HD PP is a MINIMUM of 2200BS. Most clutches are rated in terms of engine (not wheel) torque.
I think the stock TC is around 330 Ft lbs or so..but most here say 350 is the limit.
Don't hastle it. The stock clutch will serve you well up to around 320 WHP, so unless you're really pumped up and drag race it...you'll be fine.

 

I do drag race it on the track. I'm getting slippage now, started slipping in 5th then 4th now 3rd as my daily driver. Looking to finish full bolts ons this coming spring and see where I am going to go from there. might go turbo swap or spray with stock turbo just not sure yet. 18k miles on the clutch but multiple drag strip runs.

 

Just to note: Clamping force is only one factor in an equation for power handling. Material and surface area are others.

 

yes I know this but to get a company to actually tell you their friction coefficient, next to impossible.