71 up 2.47 to1 and 2.66 to 1

Well basically 340 has chet herbert cam little hotter then stock cam and rest basically 10.1 and old style TRW piston . 30 and J heads 2.02/1.60 and rest stock set up and running 3.55 gears. Plan to change to steel forks and ball and denction set up if I use late 71 trans.