Join Date: Jun 2009
Location: Murrayville, Ga
In response to E85.
i researched ethonal in great depth when i was considering running an ethanol carb on my Camaro. In a Carburated engine E85 is like race fuel, its octane rating is around 103-109 depending on the time of year (summer fuel vs winter fuel, but thats a different topic). The down fall is the fuel economy it takes more ethonal to power a vehicle than it does gas. I estimated 5-6 MPG on my Camaro with an ethonal carb, but its got/getting a helluva an engine. But in a modern EFI car that is not tuned for a higher octane fuel (E-85) you can encounter some performance loss because the engine's compression is not high enough to appreciate the higher octane fuel. Some of the early Tahoes, Explores, trucks, and other SUVs encountered a good bit of problems. Im very ignorant when it comes to modern engines (most LS based mills excluded), the ones in our cars included. I would guess by now the computers can probably compensate for the E85 better than they did when Flex-fuel was a new idea.
2007 G6 Sedan 3.5L
2002 Chevy Silverado 2500 6.0L
2000 Chevy Silverado 1500 5.3L
1976 Camaro undergoing resto Aluminum headed SBC
1973 El Camino undergoing resto 454 Sleeper
1956 4dr Belair rust bucket for sale.
Last edited by Spot_remover; 06-18-2009 at 05:48 PM.