Curly,
That again would depend alot on the gearing in the rear-end.
You didn't mention what type of truck you had, whether it's a 1/2 ton or bigger. The 3/4 ton and larger had different gears, and would result in slower speeds.
There also seems to be a difference in results between a stocck 216 and a stock 235.
My stock 52, (235) with 4:11 gears will run pretty comfortably between 50 - 55ish.
My stock 46, (216) with the same rear-end is pretty comfortable just under 50.
My other 52, with a 250 I-6 and stock 4:11's will run between 55-60.
These are all 1/2 tons, and have the same gearing, but each one has a different motor type. There's not a significant difference between them but there is some.
