Do you use a timing light ?

[BUBBAS IGNITION]

Good place to jump in i guess......I posted in regards to a good timing light and been reading the replys.
None of them are wrong but some are more right than others!
I work on Ts, Model As and Flatheads and there is no other group in the world so lost when it comes to actual engine timing. Seems as no one ever knows where TDC on the engine actually is !
Every engine needs a TDC exact timing mark placed on it sometime during the build.
Vacuum timing, spark knock timing and even starter kick back timing all work very well if you live in a cave somewhere !
(i am an old hillbily from Tennessee and have lived in a cave before and used all the above ) however that dont make it correct...
Find TDC and use a timing light !!!!!!!