[Already Gone]

I just bought a 1992 Chev Silverado 4x2 with a 350 and ( it says in the specs ) 700R4/4L60 trans. The truck is a write off because of a little rear bumper damage. I drove it home and it runs and shifts good. I bought it for the taillights and K&N fresh air system that I can transfer to my Burb. I was gonna sell the motor and trans but now I'm thinking I should put the 700r4 in my BB truck. I also picked up a 3:08 posi rear to replace my 3:73's and was gonna put that in too, but am I corrct in thinking the 700's work better with 3:42's and 3:73's ? My main objective is fuel economy. the best I ever got with my truck is 10mpg ( US gallon ) and 12 mpg ( Imperial/ Canadian gallon ). I'd be extatic if I could get 16/17 Mpg from a US gallon.
Posted via Mobile Device