Try the ratios on this table for 55mph running speeds. A CJ is brick shaped so 55mph is as much as you can hope for without burning a lot of petrol.
4.10 will stretch to a 33" tyre but may be marginal on economy and acceleration for a 35" as you are driving a lot of metal forwards at only 2,200 rpm. You would then find you had to drop to 3rd gear to accelerate and live with a limited and uneconomical top speed as the engine struggles to accelerate and maintain speed.
4.56 is a better range of ratio.
BagusJeep lives in Bali, the Land of Temples.
With a Jeep every prayer counts.
1981 CJ7 258ci - Bagusjeep
1984 CJ7 258ci - Puthijeep
1981 J20 258ci - Gladys