There's no problem with revving high just the power drops off.
well if you have a weber and a better than stock cam and stock exhaust thats kinda like putting a 40DD bra on your flat chested girl friend.
my 79 truck had a long tube header when I bought it, but had the stock carb and skinny exhaust . I went with 2 1/4 tube and a weber and got a lot more power but still ran flat about 4500. I installed a .460 cam from LCE and the 20R had enough power to run 90 on the interstate. after falling into a DEEP pit I had to upgrade my bottom end and used a early 22R block and my 20R head and could drag race almost any 4 cylinder after that. one day at 7200 rpm I floated the valves and broke an exhaust valve off destroying #4. later had that block bored to .060 but thats another story.
