CORRECT 350 DAMPER?

[Franko]

I am going to have a 1975 350 4 bolt main truck short block rebuilt to install in my 1968 Camaro. It has the 1182 forged steel crankshaft, turned .020/.020. I don't have the original damper. But, I have an 8" x 1  5/16" wide, damper (3896966) and a 6 3/4" x 1  3/16" wide, damper, pictured below. Would the 8" one be the correct damper? It looks like it is in very good condition, because the rubber isn't cracked.

[Stingr69]

Damper needs to match the timing cover pointer.  What do you have for a timing cover?

[Franko]

i don't have the Timing Chain Cover. I am going to buy one with the correct Timing Tab.

[Petes L48]

If you're going for original appearance, the 67-68 350s used the 8-inch 3896966 balancer.  I've seen two styles of them - one with a cast "cut out" in the outer ring and the others without it.  Not sure if one was earlier for 67 or they were used on other or later GM engines.