So on the way back from surf n turf I was experiencing valve chatter when on the freeway in 4th gear. It would only happen when I would load up the truck i.e. going 55mph and give it more gas. It only seams to happen under load. What could be causing this? I ran a quick go-no go valve clearance check and they were all right on. Intake .010” and Ext .014”. I am running a E-67 135 F motor with the timing bumped to about 10* with a NON-USA distributor
Thanks for the help
Ian
Thanks for the help
Ian