I have a 2000 379 Peterbilt that when it gets hot the transmission feels like it is getting tight. I have had the transmission checked and the mechanic couldn't find any problems. It also has new rear ends. Currently I have a Eaton c197c454 Clutch an Iatco flywheel (the numbers on the flywheel are 083116 Fw 2009) but I am wondering if they are the right ones.
