I just swapped motors and switched from a auto to a t45 on my 96 gt. I have 4.10 gears already but going off of the rpm/gear calculator something seems off and being so new to manuals thought i could get some insight. when im driving down the road at 50mph in 5th im at about 3200 but according to the calculator i should be around 2700. 1st gear 5-10mph im about at 2500-3000k 3rd at 20mph im about at 2300-2500k To me it just seems like its revving more then it should be in gear. What could be wrong or should i look for? I may be off, just trying to pay attention more on my driving(still learning) then anything else.