What kind of MPG? 77 Camaro with 4.8, 4L80, and 2.56 gears
09-03-2008, 01:04 PM
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My 79 T/A had a 2:41 rear gear with a 700R4 ..it got horrible mileage. The rpm's were way too low , on any kind of slight grade my vacuum was below 8"- very inefficient. I changed to 3:73 ....what a difference...got around 21 mpg on the hwy.
With the computer control and mild stock cams you can probably get away with 3:23 or 3:42...I wouldn't go lower. Also the coefficient drag on a late 70's Camaro is lower than a 4 th gen...that will hurt you in mpg compared to the 4th gen.
My 74 Camaro LS6/700R4 with 3:42 got about 26 mpg with a good tune , cold air and LT headers( stock motor).
With the computer control and mild stock cams you can probably get away with 3:23 or 3:42...I wouldn't go lower. Also the coefficient drag on a late 70's Camaro is lower than a 4 th gen...that will hurt you in mpg compared to the 4th gen.
My 74 Camaro LS6/700R4 with 3:42 got about 26 mpg with a good tune , cold air and LT headers( stock motor).
09-03-2008, 01:07 PM
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