Quote:
Originally Posted by Steve C.
There are some issues with the Hot Rod magazine reporting of that 600-inch Butler street engine using the IA2 tall deck block, one short article in 2006 stated the Victor/1190 cfm carb set up and another reported fuel injection.
The latter stated 738 hp at 5800 rpm.
"We considered a 6,000 rpm power curve to be sufficient running room, enough to let the torque build to very high power outputs, while producing a combination that will be easy on the internal assembly and valvetrain. Abnormally large displacement is the key here, providing staggering output without requiring destructive rpm levels."
And on the subject of monster Pontiac engines. Regarding WDCreech's 606-inch engine (actually a 605.5), one statement stated it replaced a 619 cu. in. engine.
Back in those days Pontiac Dude stated 535 cu.in. seems to be the best bang for the buck with current aftermarket blocks and cranks.
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That seems to make more sense. That's the beauty of these large ci engines. You don't have to spin them tight to make silly power. Dad's HP peaked at 5700 rpm, and the torque never dropped below 700 ft lbs. through the curve.