From every objective viewpoint, the e-heads shouldn't be worth a damn, yet they do perform amazingly well when lots and lots of time and effort is put into them. Unfortunately, what you are left with is a flimsy and delicate head, once you port the heck out of them, move the water holes, grind and fill, put good seats in them, open the push-rod area. It's just one heck of a lot of work. But for many years, it is all we had other than Wenzlers. The Tigers start out so much better it isn't even a comparison. But many serious players, like the Crow, Rodney Butler and many, many others had already invested thousands of dollars and hundreds of hours on the E-heads and didn't want to jump ship to another head. I understand this. The cost can be huge to make the change because it's not just the heads. Lifters, pushrods, rocker gear, valves, springs all have to be changed. If you use good parts it can easily cost 15K to change all that stuff if you include the cost of the new heads, porting, flow development, different intake. It's allot more than just the head castings. Edelbrock had a HUGE advantage by being the FIRST and ONLY choice for over a decade. In my opinion, this is why the Pro-Port head was a failure. A much better head, but way too late coming out and lots and lots of good choices now. Nobody left in the hobby with money and interest in really developing them.
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