383 harmonic balancer; source of vibration? *Picture Update*

[Chryco Psycho]

Actually the weight is welded to the converter & would be the source of the vibration.

[Bart]

I just got a TC from Dynmaic and it has no weights on it at all, running a Pro Sport balancer and it has no weight either.

[challenger_affair]

Actually the weight is welded to the converter & would be the source of the vibration.

OK thank you.  So do I understand what you're saying is the weight in the picture is attached to the back of the torque converter not the flex plate?  Can the weight be removed from that position or does the converter have to come out of the car entirely? 

I guess this means, if the car vibrates with that weight and the externally balanced harmonic balancer the both have to be replaced...

[Chryco Psycho]

At this point it is just a guess , so your 383 is a cast or steel crank ?
 steel crank will require no balance , cast may require a different weight on the converter .
You can remove the weight carefully , I would drill the spot welds & try to pry it off , do not drill too deep though or grind the metal away , you do not want to create a leak .
 

[challenger_affair]

I wish I knew which crank it had but it was set up this way when I bought it.  Is it true you can't tell from looking at the ends?

[Chryco Psycho]

true

[challenger_affair]

And if its a cast crank, that still might not be the correct weight on the converter?

[Chryco Psycho]

also true what year is the 383 ?

[challenger_affair]

also true what year is the 383 ?

The block is a 1970.

[Chryco Psycho]

if it is the original crank it could be cast or steel in 70