Nutball
Here For The Long Haul!
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- 7732
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- Oct 31, 2018
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- Mt. Juliet, TN

Yea, the popup 390 would vibrate a lot considering the stiff rubber anti vibe buffers and a heavier than stock piston (metal added popup vs metal removed) on the same size counter weighted shaft. A non strato saw with spring mounts would be best because with a popup modified piston, and removal of the side skirts (if it has any) will lighten the stock piston to reduce vibration. I think a 490 fits the bill, not sure about a 260 if it has springs or not, and a 261 has a strato ported piston, so it might vibrate more.