Ideally, you should be able to lay a carpenters level on the carb mounting surface and install the engine dead level. I've rarely been able to hit it right on, because of clearance issues or cosmetics.

My daily driver Jeep has the 5.0 mounted on about a 3 degree rearward slant, and it has worked fine for years. My '27 sits on about the same slant, no problems.

But if you ask the experts, it should be dead level. Sometimes there is the "perfect world" and other times, the "real world."

JMO,


Don