Mopar Performance Clutch equivalent? - ACT/Centerforce/SBC - SRT Forums

**tenney** · 10-22-2009, 06:56 PM

I am looking for a clutch to fit the following application:
Road Racing SRT-4
Caged, gutted, S3, HOM, heads, cams, ~400whp

I am wanting a clutch that performs similar to the Mopar Performance Clutch, at 2600 lbs the car is about 300 lbs lighter than stock so that should help the clutch survive. Previously the car ran an ACT street disc and currently the car is running a stock clutch that is slipping badly in 4th and 5th gears. Only concern with the ACT is the input shaft to the transmission. What do you think? Currently leaning toward trying an ACT Xtreme pressure plate and street disc. Would chatter or pedal effort be an issue? This is the clutch for my wife's 04 Archer Racing built SRT-4.

-David

ACTman · 10-23-2009, 12:35 AM

Input shaft? Why is that a concern on a road race car? The ACT HDSS should be fine and certainly stronger than the Mopar performance. If you are running the street disc, chatter won't be an issue regardless of ACT p/pl but the pedal will be stiff with the Xtreme. I think the Xtreme is overkill for your needs.

**tenney** · 10-23-2009, 07:13 AM

Quote: Originally Posted by ACTman

Input shaft? Why is that a concern on a road race car?

Not really sure it should be, I am mainly basing that concern on what others have experienced. I know the World Challenge teams broke input shafts using aftermarket clutches and they found either stock or Mopar performance worked best for them. They were only running about 300hp to the wheels and shifting at 6000rpm. Also a fellow Viper days racer running 450whp was having problems breaking input shafts. However, I personally have not broken an input shaft on any of the 3 SRT-4's we road race.
I was also thinking the Xtreme would be overkill considering we are not launching from a dead stop. Thanks for the help.

-David