Here is something else....
The Ford LTD was first offered in 1965 as a "trimmed" up Galaxie with a few more options as standard equipment. The famed 289-2V was the base engine, and supplied adaquate, but not extreme power. Other engines included the 352, 390, which were FE blocks.
1966 was a glorious year for the LTD. The same engines were offered as in '65, but a couple new ones were added to the list for balls out performance. This LTD was called the 7-litre. I will have to update the file, because I'm not sure on the codes. I believe there was a Q-code engine, but I'm not sure if it was the cammer or the cobra-jet. At any rate, the new engines were both FE blocks and they displaced 427 and 428 cubic inches respectively. Most of these 7-litres were 428 cobra-jets and were pretty damn fast, but a few managed to get the street animal, which can put a Hemi to shame, The 427 cammer. The cammer in 8V form boasted 658 horsepower and was the most powerful production engine to ever come out of Detroit.
Here is the site:
http://ellerbruch.nmu.edu/cs255/gducheny/ducheny.html
And that is mid 60's technology making 2 less horsepower than the high tech enzo motor.