Quote:
Originally Posted by 1997stroker
What do you guys think the gas mileage would be if you went with 4.30 gears instead of the 4.10s I have been thinking about an f350 CC 4x4 v10 I dont really tow now but possibly will be in the future would i be happy with mileage with 4.30s empty compared to the 4.10s? I am assuming it is only gonna drop about 1-1.5 mpg?
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I doubt that it will drop that much. There is only roughly 5% difference in RPM's between the two. So maybe that could be 0.5-0.7mpg's. However, the engine will be working less with a slightly lower gear by 5%. Therefore less fuel. The bottom line is that I wouldn't worry about it. That extra 5% torque to the wheels could be nice to have.
