[7tee]

When I bought the truck 2 yr ago it chattered even worse. Since then I have resurfaced the flywheel twice, put in two new clutches and pressure plates,TO's and pilot bushings. Then installed a new 350 crate motor and all the new stuff again mentioned above in original post. Through all this time that I've had the truck there's only been about 5,000 miles put on it. I drove an 18 wheeler for 15 yrs and know to take care of a clutch so I know it's not me.

I checked the trailing arm bushings and they seem to be ok. Also checked the pinion bearing for play and it's good. I'm totally lost at what else to do or check...