Flywheel identification

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Babyblue66

Babyblue66

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I'm working on a 340 4-speed car that has a vibration. It's a 70 AAR Cuda. I'm wondering if it's obviously visible to see the difference between an externally balanced and internally balanced flywheel while in the car.
 
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Looks like an external balance one to me.

20230615_124402.jpg
 
It would really help to know what you're working on- big block, small block...
There were externally balanced versions of the 440 Six bbl. and Magnum, the '72/'73 340; and all 360 LAs and 5.9 Magnums were externally balanced. And each one was different, no two are the same.
So, depending on which engine you have, there could be a myriad of combinations that would cause improper balancing outside of the simple internal/external issue.
Plus the fact that there are unscrupulous/uninformed vendors that sell what they claim are flywheels for 360 LAs and 5.9 Magnums- since they are distinctly different balances, who knows what they actually are for...
Mopar Flywheel NEW 130 Tooth 10.5" Cl Pass Trks Dodge Chry 360 5.9 Magnum 13" OD | eBay
 
Professor Fate said:
It would really help to know what you're working on- big block, small block...
There were externally balanced versions of the 440 Six bbl. and Magnum, the '72/'73 340; and all 360 LAs and 5.9 Magnums were externally balanced. And each one was different, no two are the same.
So, depending on which engine you have, there could be a myriad of combinations that would cause improper balancing outside of the simple internal/external issue.
Plus the fact that there are unscrupulous/uninformed vendors that sell what they claim are flywheels for 360 LAs and 5.9 Magnums- since they are distinctly different balances, who knows what they actually are for...
Mopar Flywheel NEW 130 Tooth 10.5" Cl Pass Trks Dodge Chry 360 5.9 Magnum 13" OD | eBay
Click to expand...
Sorry, it's a 70 340. I know there are multiple externally balanced engines. I'm just trying to determine if this is an externally balanced flywheel.
 
Babyblue66 said:
Sorry, it's a 70 340. I know there are multiple externally balanced engines. I'm just trying to determine if this is an externally balanced flywheel.
Click to expand...

From that picture with those big holes their T could be externally balanced. What does the damper look like?
 
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