What would my RPM's roughly be going 70mph if I were to get some 4.10's?

 

Depends on tranny, my C4 was pretty high( no working tach, but estimated 2800) felt terrible driving it like that, good thing it was only a few mins.-Jon

 

what should ur rpm's be at around 70???

 

With a T5 my rpms are at bout 2550 at 70.

 

is that considered high? i kno my old mustang would run about 1500rpms at 65...my new one has 373 so im wondering whats to high

 

to high for what ?

Highway driving for long distances, prolly a lil steep

Otherwise its all good. Personally i would do 3.73's w/ a 5spd. I dont have too much of a first gear, it runs out fast. I'll eventually go down to 3.73's when the funds are available, but i have alot more to buy than a diff. set of gears for now.

 

i thought i already posted this...but i have 4.10s in my 90 fox with a stock speedometer and i'ven noticed on the highway i've been at like 2600 rpm to keep with traffic, roughly 80 mph....if u travel distance don't get em. gas kills

 

o_O at 75 my RPMs are about 2400 with 3.55s...

 

http://www.speedworldmotorplex.com/calc.htm

 

well right now with 3.73's im at 2000rpm going just over 75mph. When I do get them what do I need to put my speedo back to normal.