[Power Surge]

Originally posted by Excaliber


Yup, 667 horse, 1964 high rise heads and 1964 2X4 intake. I'm not sure those new "modern" Edelbrock heads or whatever have a BIG advantage over the stock high riser units. My heads are not "ported" or "polished", just good ol' 64 iron (sodium valves)! The pistons are identical to what they had back then, 12.5 to 1 compression (when you could actually buy 100 octane).

So how in the heck can it produce THAT much horse power? Gotta be the 427's were underated "back in the day" at 425 horse. That had to be for "insurance reasons"!

OR,,, could it be the modern roller lifter camshaft? Maybe thats all it is. Anyway the only part that "broke" on my engine WAS the freakin' modern roller lifter!

Engine's out now, rebuilding with lower compression pistons and a flat tappet cam. Smaller carbs with vacuum secondary. I got to "tame" this beast, at 667 horse I was barely able to drive it on the street!

Where did 667 hp come from? I have to admit, I find that pretty hard to believe. Even the 1x4 SOHC only made 616. Hell, the SOHC my engine builder did with the race spec SOHC cams and a modern built race carb made 670. I'm sure the 12.5:1 and the high rise heads are the major power players in that combo, but that's still over 200hp more than an OEM spec medium rise setup that original came in the cars.