Do you know what year the engine is?
The one thing that is not discussed here is the pointer on a 65 289 is on the drivers side of the timing cover, this may be a case of the wrong balancer, all is not lost, I believe you can use the balancer and timing pointer you have, you need to bring the engine up to TDC and install a timing tape to the balancer with the 0* line at the pointer.
Unless the engine is a 289 then that is a whole other can of worms.