terry hanes said it will hold 250-300TQ im sure your fine
Hey, I'm no genius here but I do know that with sustained torque levels like that the clutch will wear out.
My SVT clutch held ~270 ft-lbs wheel torque based on the dyno data from from my first turbocharged 3L engine. It even held it through a night at the drag strip.
However, when I pulled the clutch to put in a spec stage3 I found that although the linings were still good, the springs were starting break from the beating they were taking and there was a lot of evidence of heat on the flywheel and pressure plate. I also found a piece of one of the broken springs that was being flung around the bell housing and nicking up the aluminum all over the place. It was only a matter of time before those went then the rest of the disk followed.
So two points from my experience of torque loads that high on an SVT clutch:
1. When running quick through the gears the disk takes longer to clamp up under those loads. This increases the wear. Multiple passes down the strip will cause the clutch to overheat and slip. If you don't go too far and let it cool down it will not destroy the clutch but wear is accelerated.
2. Springs are too soft and wear out faster and tend to fragment. Situation will be worse with filled engine mounts.
In my experience, the SVT clutch was fine for two years on a 3L engine. Thats probably 20K miles on it and it was good. With a top of the line higher torque NA 3L with an aggessive drive who likes to slam the clutch through the gears, an SVT clutch will probably break its springs though it should hold fine. If you are a normal spirited driver it will be fine.
Nitrous shots of 75 and above on even a 2.5L will generate torque loads above 250 ft-lbs and should be treated accordingly.
