340 Static Compression Numbers and Test Procedure

I'll try and get this post correct.

Those holes are essentially to zero balance the damper. The next one may have two holes or no holes.

Again, I don't skimp on dampers. An elastomer damper starts to degrade from day one, and it also has a very narrow range to control harmonics. Change the bobweight, change the frequency the damper needs to deal with.

Chrysler has a pretty good write up on this in the engine book.