My rebuilt engine only has harmonic balancer and have taken
harmonic along with the other pulley I need off old engine.
Will I have any timing issues doing this ?

_________________
Since I bought my 63 my guitar
has taken the back seat.

More info needed.

(1) What year is your timing chain cover?
(2) What year engine did the replacement dampener come off of?

My original engine is a 66. Cant get no info on this engine im putting
in engine id is 2806830-4 . I tried to look it up but the year is blank?

_________________
Since I bought my 63 my guitar
has taken the back seat.

The 66 engine should have a bolt-on timing "Tab" that is viewed from the drivers side of the vehicle.
Most all "5 freeze plug" 2806830 Slants have a timing tab that is welded to the T. Cover and viewed from the passenger side.
I quick comparison of the marks, on the two dampers will show you that the TDC marks are in different locations, to match-up with the Tab location difference.

Your easy solution: take the bolt-on tab and 66 damper and install both items on the later engine.

Once you have done that, it is easy to align the marks on the driver's side tab, then punch a new mark an the damper, that shows TDC on the passenger side tab...
BTW, I find that the passenger side (welded-on) tab is much easier to see and work with.
DD

My 66 never had the marks which stumped me on where the heck they
where ,this new engine does have them on the drivers side and my
brother in law is coming over to help me out . Thanks for info

_________________
Since I bought my 63 my guitar
has taken the back seat.