I'll tell you a little story since this has come and no one is arguing, just asking for information.
Back in the day Coy, Bill Hull, Rich Thomson, Charles Warner, Spiro and perhaps others were working on the SC. Way back in the day. So the story goes that Bill Hull had commissioned Coy to build the first (or SCCOA's first) badass SC motor which he did and the power numbers came out around 400hp. I remember the posts back when I first had access to a computer and barely knew what an internet was. This would have been somewhere around 1997.
To set the stage for this you have to understand that Coy is a race engine builder, not a car hot rodder. You also have to recognize that chassis dyno's were not used extensively back then nor were they trusted like they are now. Chassis dynos were (and sometimes still are) scorned by "real" race engine builders. We as consumers focus on usable HP (rwhp) whereas an engine builder sees the car as the enemy robbing power from his creation. Because of this most engine builders typically don't like or use chassis dyno's.
Ok, so back to the story. So Coy dyno'd the motor in the fashion which he was used to dyno'ing motors. Straight shot intake with no filter, bell mouth adapter to straighten airflow, intercooler with unlimited airflow through it, oversized cooling system, headers with no exhaust system. No power steerring or alternator. You might be starting to get the picture..... The engine was set up to make power!
At the time the SC community included a few people whom later on "parted ways" over personality conflicts, but one of the people not mentioned above also went personally to Coy's to look at this "400HP+ SC engine". Rich, Spiro, Bill, Charles, and maybe some others were all there ooing and ahhing over this motor. The "other" person who was there at the time was Jerry W. Jerry, being a Ford engineer at the time, was a little more critical than the rest and he disapproved of the test methods. He wasn't impressed by the 400hp and proceeded to predict, much to the utter disgust of everyone in the room, that the motor would make about 280-290hp on a chassis dyno, and proceeded to explain why. Some people got really upset. In fact they got so upset that this ended up being one of the contributing factors to the creation of TCCOA. Jerry was no longer welcome. Granted, Jerry has a pretty big ego too, but the story continues on with Bill Hull, Rich Thompson, and a variety of others all making under 300rwhp (some more but most less) with their 400HP CMRESII motors. It was even more confusing when I made 313rwhp on my homebrew stock bottom end motor three years later in 2000, after to my knowledge, none of the CMRE motors (cars) had surpassed 300rwhp by more than a couple hp, but Jerry was long gone by then.
So there is a little story about that. Interestingly enough, there is a "new" person posting here about his car that went into storage about this same time. His car is a west coast relic from the same time period with parts and R&D from a completely different camp. The owner says that Kenny Duttweiller tuned his car, but due to the fact that Gerry Magnuson and Eaton were involved with that car, I'm pretty sure that Jerry W. probably knew about that one (and others) that existed about that time making probably significantly more power than the CMRE ones did. But as a tuner and Ford engineer you end up being privy to lots of things that would be considered "unfair" to the competition as well as just plain confidential at the time.
It's trivia really at this point, but the stories have merit and do help to explain why some things evolved the way they did. It helps explain why in the early days there were many promising developments that simply disappeared and we were left scratching our heads. We've gained most of it all back now, but the road has been long and convoluted in the mean time.