Oldsmobile 350 engine flywheel counterweight/balance question

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Old Jan 31, 2025 | 05:25 PM
  #1  
AozakiOlds's Avatar
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From: West Texas
Oldsmobile 350 engine flywheel counterweight/balance question

Good evening.

I had a general question involving what I assume is the factory small block flywheel/flexplate. So, I have already fully re-installed the TH350 transmission in my 1970 Cutlass. Since it has been cold recently, I haven't worked on the car in over a week now. I was under it yesterday and was about to put the torque converter cover on, when I noticed something I had failed to see before on the flexplate. It appears that before I bought the car, someone had recently ground off a bit of the counterweight. I am not sure why, but I assume that at some point they had tried to install a Chevrolet-type torque converter with the larger mounting points for the torque converter bolts which overlap with this counterweight strip. My main question is, is this amount of lost metal a significant amount that would be enough to throw off the crankshaft balance and cause engine bearing or other damage? To be honest, I really do not want to have to take the transmission back out again, but if I have to, I will do if if this flexplate actually needs to be replaced.
I appreciate any advice over this.



Old Feb 1, 2025 | 05:45 AM
  #2  
oldsmoboogie's Avatar
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From: Quad cities Illinois
I would not think twice about running that the way it is.
Old Feb 1, 2025 | 06:27 AM
  #3  
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From: Marble Falls TX
Agreed, run it.
Old Feb 1, 2025 | 08:48 AM
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I wouldn't lose any sleep over it.
Old Feb 1, 2025 | 11:12 AM
  #5  
AozakiOlds's Avatar
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Originally Posted by tru-blue 442
Agreed, run it.
Thanks!
Old Feb 1, 2025 | 11:13 AM
  #6  
AozakiOlds's Avatar
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Originally Posted by fleming442
I wouldn't lose any sleep over it.
Thank you!
Old Feb 1, 2025 | 11:15 AM
  #7  
AozakiOlds's Avatar
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From: West Texas
Originally Posted by oldsmoboogie
I would not think twice about running that the way it is.
Thanks!
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