Interesting thoughts about future LS-x engines
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Le Mans Master
Joined: Dec 2000
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From: Hot Springs AR
Interesting thoughts about future LS-x engines
Saw this topic on the Autocross forum, and while the posts kinda deviated from the original post, there was some interesting points brought up.
First, I'll reiterate the original poster's disclaimer: this is info from a source outside GM, so take it for what it's worth. I thought it was interesting that it implies (at least to me), that the future LS-x engines will all be supercharged.
http://forums.corvetteforum.com/show....php?t=1852791
My question is "Is this how GM is going to recover the lost fuel economy from running E85?" Ignore the hp and torque figures. Ethanol has a natural octane rating of 107 (IIRC), but a lower btu density. E85 is stated as having an octane rating of 104, so you should be able to design a boosted engine that can recover the CAFE numbers that a NA loses when running ethanol-blended fuels.
Thoughts?
Mike
First, I'll reiterate the original poster's disclaimer: this is info from a source outside GM, so take it for what it's worth. I thought it was interesting that it implies (at least to me), that the future LS-x engines will all be supercharged.
http://forums.corvetteforum.com/show....php?t=1852791
My question is "Is this how GM is going to recover the lost fuel economy from running E85?" Ignore the hp and torque figures. Ethanol has a natural octane rating of 107 (IIRC), but a lower btu density. E85 is stated as having an octane rating of 104, so you should be able to design a boosted engine that can recover the CAFE numbers that a NA loses when running ethanol-blended fuels.
Thoughts?
Mike
