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stroker motors and mpg

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Old 07-13-2011, 05:03 AM
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Originally Posted by Floorman279
is running e85 necessary for you? i thought i saw on horsepowertv once that e85 actually produced a little more hp numbers and i beleive slightly better mpg
e85 WILL NOT get better gas mileage just for the record. It has a higher octane rating so you can run more timing in the tune but do some searches on it, burns fast!

any muscle car with a stroker engine should just read "S.O.L." on the mpg gauge...
Old 07-13-2011, 02:57 PM
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22mpg cruise set at 75 a/c on.
Old 07-15-2011, 11:09 PM
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My LS2 403 on E-85 gets 10.8 MPG. I run the hell out of it. Baby cam and hand ported Trick Flow 220's.
Old 07-16-2011, 06:49 AM
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404 LQ9, TEA Stg2 243, Tqr 2 cam, FAST92/NW92, 1-7/8 Kooks, 3400 245mm stall, Bobby Build 4L60E, Moser 9" 3.75's

usally between 9 to 19mpg - depending on if I'm commuteing or sunday driveing

Low of 8 mpg, after a half dozen 1/4 mile passes

I did get 22mpg all highway... explaination; wife in car, cruise control locked at 62mph most of the time

IMHO, you're going to see a drop with a bigger motor, but if your tunes good and you stay out of the go-peddle, it won't be that bad. Stock LS1 was averageing 20'ish, lid/k&n only.
Old 07-24-2011, 11:10 AM
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Originally Posted by Floorman279
i may be doing an ls3 build in the future, and plan on doing h,c,i and full exhaust to her. If i did the exact same mods to a 418 ls3 stroker, how much more gas will i use...will it be like a 1-2 mpg difference on the highway?
If your worried about fuel mileage, go with FI, a turbo will add tons of hp and tq with 5-7 lbs of boost which is safe for a stock LS motor and when you keep your foot off of it, you might actually see a 1-2 mpg increase!!!! So there you go, plain, simple and straight!!!
Old 07-24-2011, 11:53 AM
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20mpg on the motorway, and 12ish around town, over here in the UK we are paying $10 a gallon for 98ron petrol!!
You guys should think yourselves lucky, thats why my daily driver is a 320D BMW thats 45mpg!!



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