Cam for 340 with 2.97 gears

Well YR I ran 3:31 with an OD trans nice and quiet out on the highway
also have run 3:54 and 4:11 with the OD all work fine
back in the day we ran the Mobilgas economy run with 2 series gears and T-96 with OD and the tallest legal tire was like taking off in second gear but did get excellent mileage
Today we can get 8-9-10 speed trans and have the best of both worlds