2007-09-17 10:08:45 · 6 answers · asked by Anonymous in Cars & Transportation ➔ Car Makes ➔ Chevrolet
With no over-drive? You got about the same mpg city as you do highway because at highway speeds your rpms were very high. Depending on the way you drive, 11-16mpg
2007-09-17 10:15:41 · answer #1 · answered by Katie 5 · 0⤊ 0⤋
I had a 70 LS-6 Turbo Hydro SS Chevelle with 355 gears which got 18 on a good day with 103 octane Sunoco gas. That was the highest octane street gas avalable those days.
2007-09-17 20:02:17 · answer #2 · answered by Country Boy 7 · 0⤊ 0⤋
They used to get up to 25MPG, depending on what car they where in and if it had a 2 or 3 speed automatic or a 3 or 4 speed stick shift. They used high compression engines and leaded gas that used to be 110 octane.
They didn't really need over drive. The speed limit was 55mph, and the cars often had high (numerically low) gears in the rear end.
2007-09-17 18:17:30 · answer #3 · answered by jim 5 · 0⤊ 2⤋
14-17 mpg
2007-09-17 17:13:12 · answer #4 · answered by billc4u 7 · 0⤊ 1⤋
big blocks were notorius for their low gas mileage.. 10 to about 14 was maximum
2007-09-17 18:22:30 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Ive got an old test of a ls6 chevelle where 9mpg was the best they saw.......
2007-09-17 19:42:37 · answer #6 · answered by draakarmaul 2 · 0⤊ 0⤋