gas mileage
#1
gas mileage
Is it possible to get 28 mpg on the highway with my mods? I did it all the time doing 60-65 on the highway and keeping the RPM's below 2000 at all times. My friends don't believe me and I need to prove them wrong. How is the gas mileage on the LS1's so my friends can stop bothering me?
#2
Join Date: Nov 2007
Location: Eastern PA,
Posts: 10,362
RE: gas mileage
http://www.fueleconomy.gov/feg/sbs.htm With the 6 speed 28 MPG was the window sticker for highway.
#4
RE: gas mileage
Yeah with my M6 and cam, heads, fast intake, 90mm TB, LT's...etc etc... I get about 24 or so doing 70-75. And yes 28 was what m6s made on highway from factory as stated in the link above.
Whats hard to believe is that here in 08, ford with 6 more model years of stangs, can only get 23 from a 281 c.u. 4.6 and gm got 28mpg's from a designthat is 10-11yrs old and has 75 more cubes and1.1 more liters
Whats hard to believe is that here in 08, ford with 6 more model years of stangs, can only get 23 from a 281 c.u. 4.6 and gm got 28mpg's from a designthat is 10-11yrs old and has 75 more cubes and1.1 more liters
#5
RE: gas mileage
what do you guys normally keep your car in 6th at? The guy that sold me mine told me that i should wait till around 73-74ish so it will keep the rpm's at around 1800 or higher, because that'll be in the powerband of the ls1 and it's better for the engine and ecm..
#6
RE: gas mileage
At 75 im just a hair under 1600rpms so on the highway I stay at least at around 1300-1400 or higher in 6th. I go to 6th when I hit about 60mph in 5th and on the highway just drivin. When racing/hauling ***.....those numbers change dramatically!
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The Corvette Doctor
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11-15-2007 10:42 PM