Originally Posted by
MiDiablo
You're going to get piss-poor gas mileage. 4.10 gears are going to keep the motor turning at a higher rpm in every gear. The lower the numeric figure on the gear-set, the better the gas mileage & more top-end gearing/speed (ie: 3.08, 3.27, etc); the higher the numeric figure, the better acceleration and worse gas mileage (ie: 4.10, 4.30, etc).
If you're modding a car and concerned with gas mileage, maybe you should be building a Honda?

I am building a honda

.This is for my step dads car we changed the oil in the rear end on his v6 and it had a ton of shapnel in it.we happen to have a gt parts car and was thinking about using the rear end.
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