4ontheFloor, don’t take this the wrong way, I’m really not trying to be a smart ***, but that’s simply amazing. You are somehow managing to get as good or better mileage out of 60 year old technology than most of the automobile manufacturers are capable of today. You gotta rank up there with the super tunner dudes that run the big time racing circuits. Has a half dozen Chevy inliners(cars)in the 50's and 60's and never got that bad of fuel milage with them, but never as good as your getting.
I’m sure that a 4.11 would give me a little, mind you a little better mileage, but I can't seem to find one O' those for my 3/4 tonner. And these calculations that I’ve made aren’t cut in stone. I haven’t really done a detailed check yet, just pumped a few gallons in and took a rough guess at how many miles I’d gone before I punched the numbers in. A real scientific study of the mileage is some where down the line but it’s gotta hover somewhere around 10mpg. Speed? Mostly around 40 and 45 mph, occasionally I’ll hit 50.

The Rochester “B”! Ya must not have read any of the thread, about the rather extensive work that I’ve be doing with the Rochester “B” carburetors all summer. Pretty straight forward carburetion, once ALL of the pre-drilled passages are clear and sealed up with new lead plugs, the ball checks properly placed and a power piston operating freely and properly biased, floats leak checked, balanced and properly adjusted, main jet checked for any signs of erosion, (checked with plug gauges and on comparator for form), there taint much else you can do with it but adjust the NEW idle mixture adjustment. That be a steady 22in.Hg. and an idle speed of 500rpm.
How solid is the engine you ask? Fresh valve job, 130lbs across the board (dry). Tune comes next? Totally rebuilt distributor with all new parts, timed ball to pointer, valves adjusted hot to .007” and .014” and the lift checked with dial indicator to check for cam wear. And I think that’s all there is to it.
I’d sure appreciate any advice you could offer to improve the tune of this old 216. I'm open to any suggestions.

Naw, the old gals kept in the barn all night long, taint nobody snitchin gas unless it’s my Big old wife.

Denny Graham
Sandwich, IL

Denny G
Sandwich, IL