Originally Posted by JimX
With an otherwise stock engine, the major benefits of a 336 cam addition will be poor idling and decreased gas mileage.
The operative phrase being "otherwise stock". With the correct setup, the engine will run extremely well and gas consumption will increase only modestly. I had a blueprinted '82 R100 with the 336 cam, Mikuni flat-slide carbs and Bub exhaust and it ran like a top and got 36-40mpg. Good power, too...
Wish I had it back!