Isn't 4th gear 1 to 1?
Yes, but unless you use a rear end that is 4.11, your 4th gear will be like an overdrive. For example if your rear is a 3.08, your 4th gear will represent a reduction in rpm of apx 25%. Then your 5th gear (if you have a T5 with a .86 fifth) will be 2.65.
Jon,
The OP seems to be in the early stages of understanding everything involved in coming up with the best way to go for improvement of operation.
I understand the premise of what you are trying to say, but the way you presented "4th gear as your first overdrive" is technically misleading.
Yes, they are interrelated, but it might be better to discuss OD transmission function separately from rear end ratios for his benefit.
I am just envisioning the OP going somewhere and asking a guy for "one of those T-5s with 2 overdrive gears" and getting a strange look.
Carl
