Can I change my Harmonic Balancer?

[427mach1]

Cannot see for certain, but that does not look like a terrible fix - especially considering the era in which it was done.  If I were needing to replace it I would bring that one and my chosen new piece to a machine shop and have it match balanced.  Its not like its a frequent service item.

Thanks Barry.  I would definitely have a new balancer match balanced if I ever get one.  Another problem is the chunk that was removed contained the high end of the timing marks.  I can set initial timing but checking at 3000 rpm isn't possible.

[jayb]

I've had 428 cranks balanced with LeMans rods, back in the early 1980s, and nothing was required to be done to the harmonic balancer.  Weight was added to the crank counterweights to compensate for the heavier rods.  I still don't like cutting the balancer as a solution.

[C6AE]

Cannot see for certain, but that does not look like a terrible fix - especially considering the era in which it was done.  If I were needing to replace it I would bring that one and my chosen new piece to a machine shop and have it match balanced.  Its not like its a frequent service item.

Thanks Barry.  I would definitely have a new balancer match balanced if I ever get one.  Another problem is the chunk that was removed contained the high end of the timing marks.  I can set initial timing but checking at 3000 rpm isn't possible.

Use a piece of "timing mark tape" and time it on a different cylinder than #1

I do this sort of thing all the time. With a dial back light only TDC is needed for any given cylinder.

Tape; https://www.summitracing.com/parts/msd-8985?seid=srese1&gclid=EAIaIQobChMIz4LHx5qD5gIVXB6tBh0uUgDEEAQYBCABEgI0HfD_BwE
Use a pi