New To The Forum With Some Questions

The limit for this ‘56 CJ5 is the F134. Even with an overdrive, or not, the Jeep is able to run 55 to 60 mph, then it hits a wall. You can pull a few more mph out of it, but it starts really straining. A couple miles, OK, but 50-60 miles of competing with the semis at 75+, that will kill the Jeep.
My F134 ‘65 with 4.27 gears and 28” tires could hit 70 mph on flat ground with a good tailwind (and several miles to get there). Literally, a headwind made this impossible.
-Donny

 

Just like my YJ.

 

At least in theory, a CJ powered by either 134 should be able to obtain a top speed of about 120 mph. You just need access to a 1500' cliff. Thelma and Louise style.

 

I agree and will also be intstalling an overdrive this winter. I have 5.38's with a t98-4speed/f-134 and 45mph is my top cruising speed. Ive had it up to 55 in short bursts when accidentally getting on the freeway for a couple exits haha. It SCREEEAMS above 50. The sound is like a tank and cars seem to stay away when really ripping down the street LOL

I once drove it to Long beach from Culver city, CA (about a 45 min drive) on the 405 freeway. going 50-55. It wasn't happy when I got there. Never again.