Any Noticeable change going 3:42 to 3:07?

[kelsfine69]

Well the old Gov-lock 3:42 Posi packed her in last night. So now I'm on the hunt for a another diff. I plan on getting another diff and re-bearing it and doing a full axle housing swap. The problem is finding a 3:42 non posi is almost impossible around here. I don't really need a posi for the truck, it is just a daily driver/hobby. Its a 1987 Silverado 350 Fuel Injected with a 700r4 trans. I found a 3:07 rear end that is in pretty good shape. Will I have a problem with power? mileage? Did the 350/700 combo come with any other diff ratios other than 3:42? Or should I be looking for something else? Thanks Guys