Mr Lang,
The dipstick on my 1953 235 full pressure powerglide engine is 15 and 1/8 inches from the stop to the end. The tube is six inches from the block to the end of the tube.
My engine takes 5 quarts plus one for the filter, which brings it to the full mark after running the engine. How much oil do you put in your engine to reach the full mark?
Kurt