Strummin, I don't doubt that you're getting that kind of gas mileage, but I'm sort of curious. I had a 64 Chevelle wagon with a 194 and a 3 speed manual trans in it, and I got 19 mpg as an overall average. How the heck do you wind up with 11-13 mpg with either a 4 of 5 speed in a Nova body? Around town, you'd never need to shift up to 5th with 3:36 gears in the rear end. 5th should be a freeway only gear. If you only use the first 4 gears, it should come out about the same as a Saginaw or other 4 speed as far as your gas mileage goes. Robert's right about the double overdrive effect in top gear.
