Vibration at 2200 RPM

OK, at least we know it's an automatic. Now is it a 727 or a 904?

Can about imagine it was an early small block V8 car, that has now been upgraded to a 360 V8.

Going from neutral balanced engine to an external balanced engine.

Who did the work? Did you buy it with the 360 in it?

What part of Florida are you in? There are a lot of FABO members on the East Coast that can easily figure it out for you.

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727 trans. Previous owner built the engine and I purchased it with the 360. I had the mounts and balancer installed by a local guy. Car was originally a 6 cylinder. I live in the Clearwater area and would welcome in person recommendations if anyone is willing!!