A 235 can easily handle the gear. I have run a stock 235 with 3.08 rear end and .70 overdrive, making an overall ratio of 2.15. Of course that is only on flat ground, you will have to downshift on the slightest hill, but it will work fine. My '54 GMC with a 248 is running a 3.36 rear end and a .70 overdrive, makes a great freeway gear I can run with the best of them now.