I have 4.10s now i went from 23 mpg on a tank to just about 20. I love them!!

 

What would be the rpm's running @60 mph in 5th with the 4:10's ?

 

Are you cruising around town around 4000rpm? Lol

 

I know 80 is 3k

 

I've got the stock 3.27s and I would say you don't need more gear. spend the money on a CAI and a tuner instead.

Plus with my tuner, I went from 22mpg to 26mpg.

Basically got to have my cake and eat it too. More powerful and more efficient all at the same time

 

Which tune are you using?

 

91 race my first tank was dismal because I just loved the power too much, but I settled back into my commuter style again and its great day to day. if you keep your foot out of it, it gives some sweet rewards

I havent done any kind of long testing with the 87 tunes yet, but hopefully they'll do even better.

Plus if I take the 150lbs of junk out of the trunk, it'll probably help a little too.

 

4.11 gears with a 3000rpm stall torque converter is a fun take off!!!