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Old January 28th, 2020, 04:56 AM
farmdreamer farmdreamer is offline
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Location: Platteville, WI
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Default Re: 478 Diesel vs Gas?

I have some updating since it’s been a while. I just came across someone selling a 305 out of a pickup for $250. It’s stuck, but thought it might be useful for my swap. The bellhousing in particular was of interest to me since mine are out of unis with a sae housing set up for hydrostats.

I found that you need a 16” flywheel to fit in the truck bellhousing. Then, I noticed my flywheels are different sizes between the gas and diesel. The gas one is a 16” flywheel. Then, I went looking for the stamping on the gas and see it’s a 401, not a 478. I think this might be good in that it doesn’t require an externally balanced flywheel and I could swap the whole setup over from the 305 to the 401 without looking for a balanced flywheel. Still a big power upgrade from my current 250. But, not a 478.

I know in my reading that the 478 gas requires a balanced flywheel. Does anyone know if the 478 toroflow does as well?

Thanks!
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