Hello everyone, I have a question regarding the installation of a modern harmonic balancer on a 365 Cadillac motor. I've come across several discussions where people mention the idea but haven't provided specific details on the process or requirements. Considering the harmonic issues often ***ociated with these engines, I was wondering if balancing the rotating ***embly and using a fluid damper could potentially help to alleviate them. I just wanted to know if this is something that's really hard to do. Thank you in advance for any insights or information you can provide. Best regards,
If the crank is internally balanced then i would recomend a fluid (viscous) damper is used after the crank ***embley is balanced. The damper its self should be a balanced ***embly. Fluid dampers are less critical on the application. Strictly speaking rubber element dampers are factory tuned to a specific application... speaking as a former application engineer for a crankshaft damper manufacturer
Is the old Cad internally or externally balanced ? Thats the first thing you have to consider. I have a later model (500) Cad that I'm going to put either a Fluid Damper or an ATI on. If its internal balance, I would get a large one and just machine it to fit the existing hub. A call to the manufacturer may provide you with something that has the correct size mounting hole or if you find a used one, they may be able to do some tuning to it for your application even though it wasn't originally designed for it. When anyone varies from OEM parts while re***embling an engine, the harmonics will be different. The engine should be balanced with those parts. Then an OEM damper may provide marginal help but its done all the time. My guess is any decent size variable damper is going to work better than an OEM.
Why do you think you need one? They are very similar to a SBC in design. It's basically a stroker sbc. I haven't heard of any balance issues. They are internally balanced as well.
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