What kind of fuel mileage should a 1951 (replacement engine) 216 be expected to achieve if all variables are at optimum? If I've been running too rich all these years and miles and achieving 12 mpg, what could I expect if it wasn't running rich?
I'm also curious how a 6"x1" steel mesh filter can allow more fresh air into the engine than a 6" x 2" paper filter.
I removed the steel mesh element on my '56 Cadillac and replaced it with a paper filter (albeit it's about 15" by 4" which is the same size as the original steel mesh) and my fuel economy increased from 14mpg hwy to 16mpg hwy.
I put 30,000 miles on a '52 with a 216 and got 15 MPG whether the bed was empty or had a half a ton of fertilizer on a pallet in it, or driving it in town, or on a 1,000 mile trip on the interstate at 55 mph. I had the pancake filter with the oil-soaked mesh in it.
I currently drive a '50 with a '53 235 in it. Guess what, I get 15 MPG no matter what.
I also have a '49 that has a 350 and automatic transmission. 15 MPG.
