Originally Posted By TJP
You might want to read the following post paying particular attention to the M/C pushrod adjustment. Your issue sounds like a candidate for the pushrod being too long

https://board.moparts.org/ubbthreads/ubbthreads.php/topics/2115445/1.html

twocents


Again, I started out with the booster pushrod a good quarter inch or so out and now it's screwed all the way in to the booster. I have some plain dead travel when cold but it comes up the same once the car is hot. It is not a pushrod length issue.

1967 Dodge Coronet Deluxe station wagon

1.03" T-bars, QA1 arms/rods, Cordoba/GM Metric/Volare brake & knuckle, XHDs, Hellwig rear sway, 318 Magnum w/ air gap, 727, 3.23s