I have just finished restoring a 1960 CJ6 with the Hurricane F4 engine. I have it going into the garage for a tune up and service Wednesday. I am very disappointed with the road speed of the old Jeep. Top speed with full throttle is 70Klm/hr or for my American friends 45 miles/hr. The engine is in brand new restored condition, electronic ign. although not yet fully tested the timing with a timing light. My question is what cruising speed should I expect? Can anyone give me an idea of that? A CJ5 with the Hurricane F4 engine should be the same.