Question for our Engine Experts on E85?

[Larry E.]

I noticed on my new Silverado's engine (L83) has two horsepower specs. It appears that the engine
has more horsepower with E85 which kinda surprised me. Here is the specs.:

Horsepower (hp / kW @ rpm): 355 / 250 @ 5600 (gas – SAE certified) 380 / 283 @ 5600 (E85 – SAE certified) Torque (lb-ft / Nm @ rpm): 383 / 519 @ 4100 (gas – SAE certified) 416 / 564 @ 4100 (E85 – SAE certified

Read more: http://gmauthority.com/blog/gm/gm-en...#ixzz34ztE1Ian


Question: Does the new C7 Corvette also have two engine power specs.??(Not sure if the C7 can run on E85?) Comments please. Larry

[Michael J.]

Re: Question for our Engine Experts on E85?

That is surprising. My wife has a flex-fuel Cadillac SRX V6, and it definitely seems less powerful with E85 in it, which it hardly ever has as the economics just don't warrant using E85 over E10. I am pretty sure the C7 does not have flex fuel capabilities.

[Joe L.]

Re: Question for our Engine Experts on E85?

I noticed on my new Silverado's engine (L83) has two horsepower specs. It appears that the engine
has more horsepower with E85 which kinda surprised me. Here is the specs.:

Horsepower (hp / kW @ rpm): 355 / 250 @ 5600 (gas – SAE certified) 380 / 283 @ 5600 (E85 – SAE certified) Torque (lb-ft / Nm @ rpm): 383 / 519 @ 4100 (gas – SAE certified) 416 / 564 @ 4100 (E85 – SAE certified

Read more: http://gmauthority.com/blog/gm/gm-en...#ixzz34ztE1Ian


Question: Does the new C7 Corvette also have two engine power specs.??(Not sure if the C7 can run on E85?) Comments please. Larry

Larry-------


Ethanol has a high octane rating. So, it may be that when E85 is used the knock sensors allow more spark advance and, thus, more power.

No Corvette engine is E85-capable.