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Old 06-19-2013, 11:55 AM   #14
jrh@lpe
 
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Drives: anything
Join Date: Aug 2010
Location: Decatur
Posts: 95
2014 Silverado E85 vs gasoline testing chassis dynamometer results

The 2014 L83 engine is rated at 380 hp on E85 (vs 355 hp on gasoline) and 416 lb-ft on E85 (vs 383 lb-ft on gasoline).

We ran the truck down to about an 1/8 of a tank and then filled it up with E85. Pump E85 never tests at 85% alcohol since they have to dilute the alcohol itself with gasoline for transportation in order to make it no longer consumable by humans. Then we still had some fuel in the tank as well. So before switching to E85 the on-board alcohol sensor read 9% alcohol content and after switching it read 65% alcohol content.

Attached is a graph comparing gasoline vs E85. The speed governor has been removed in order to allow us to test to a higher speed on the chassis dynamometer.

On gasoline the peak power is 302 hp and 332 lb-ft and on E85 that increased to 321 hp and 355 lb-ft.

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