SB push rod legnth checker, how to
No, do not check lash at TDC. Either use the Mopar chart or the "EOIC" method
Either method insures that the lifter is on the backside (heel) of the cam, which does not happen at TDC
When the EXHAUST valve starts to OPEN set the intake on that cylinder
When the INTAKE has opened and is nearly CLOSED set the exhaust on that cylinder
The chart, which requires you to mark the balancer every 90*