[fbarrett]

Many excellent books exist that go far, far beyond the quick answers that you will receive in this or any other forum. High thyself to Amazon or a good automotive bookseller.

As to driving differences, I consider the E the best of the three, but then, I would, as I owned a '70 E for 18 years. It had good top end (not as much hp as the S at high rpm) plus a surprising amount of bottom-end torque and power, so it could pull an S out of a slow corner. Coming onto the long straight at Pueblo, my 2.2E would pressure a friend's 2.4S (lower factory compression ratio). This let me at least keep him in my clutches going into the 180-degree bend at the end of the straight. The E cams were favorites for strong yet flexible race engines. In short, I'd take a 2.2E over a 2.2S or 2.4S any day of the week.