Double clutching, like the rest of driving an old Stovebolt is a learned art, and those who don't drive old Chevys don't appreciate the skill and pleasure of the "how to."
You will learn it.
Make sure your transmission is filled to the PROPER level--do not overfill! Filling the transmission involves taking the screw fitting out of the side on the lower part of the tranny, injecting the right gear lube into the hole until it ALMOST runs out and screwing the fitting back in.
Most mechanics test the fluid level by putting the pinkie finger in the hole after filling. If the finger gets some grease on it, but the grease is not dripping out of the filler hole, the amount is about right.
If you stick your pinkie in the hole and there is no grease to be found, well, fill it up a little.
Now, with the tranny properly filled, climb in, crank 'er up and go drive it. The couble-clutch instructions here are right. Just take it easy on the shifting. It is never necessary to "force" the transmission into a gear. Don't be in a hurry to start with and practice on a level road, or even a little downhill--not so much that she will run away when you go to neutral.
The less shaft pressure you have in the gearbox, the easier it will be to learn to double clutch.
The when you really get good, try a little uphill shifting. The secret of double clutching is to shift to a higher gear without loosing a whole bunch of speed which would require shifting back to the lower gear (number).
Downshifting is what separates the men and women who drive TRUCKS from those that ain't got a clue.
Now, once you are really comfortable with double clutching, you can dream about shifting WITHOUT EVEN USING THE CLUTCH! That part of the art of shifting involves matching the engine speed with the speed of the transmission and effecting a smooth shift. Wait a while until you feel completely comfortable double clutching and come back for Stovebolt Shifting Lesson #2.
That's the way the old-timers did it, and you can learn to do it too.
