Hi during the timing verifying that i did. I did verify down on the pistons with 2 skue divers same length all four cylinders same height and marking on the crankshaft pulley and the camshaft points did line up. I will verify on valves.
When you say “all 4 cylinders the same height “ do you mean the timing marks on the pulley line up when all 4 pistons are 1/2 way within the bore as the timing makes line up?
Then if so your harmonic balancer is buggered!
Or do you mean when #1 piston is all the way up to the top of it’s stroke when the timing marks on the pulley align?
In which case we can forget about the harmonic balancer.
At TDC #1, does the distributor rotor arm point at where #1 plug lead is on the distributor cap?
If not reposition the plug leads so that the rotor arm lines up with #1 and obviously move the other leads around according to the firing order.
Btw did #2 spark improve once the cap, rotor and plug leads were replaced?