Chevy 8.1L gas motor with factory conversion to propane. Same as the engine in my 3500 dually.
Propane prices are dropping, you're going to see people get more interested in conversions as the fuel price keeps coming down relative to gasoline. I have a wholesale guy I buy propane from here at home for $2.00 per gallon, I had to buy some at Flying J last trip at $2.99 per gallon, and I saw a TSC store here locally with $2.49 per gallon advertised. At $2.49 per gallon, figuring in the 90% efficiency you used (it's actually not quite that bad in practice) make the effective price vs. gasoline $2.75 per gallon. About a 25% savings vs. gasoline at $3.75 per gallon. Pay for the system in a year or so and bank the money after that. I'm going to convert my next dually that I'm shopping for now, the one I'm driving now has too many miles to be worth the investment.
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