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Well then Reggie, I guess you didn't read you own press then. He basically was refering more to a "racing type" mill as opposed to a dual purpose mill, which 70% of the members do run/own. Get YOUR facts straight buddy.

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And he also said that BORE has the advantage. Dual purpose mills notwithstanding - the larger bore would have the advantage based on his experience. I'll put my money on the Chrysler engineers, who were designing cars for the HP street market - for a living BTW. There sure weren't any 413 Road Runners coming off the production line, and they were "heavy cars" that are supposedly so great for 413s according to the fractured logic in this thread.

In an Feb. '87 HOT ROD magazine article, they took a 1970 Cadillac Coupe De Ville, loaded it with pasengers and other junk to get it to 6,700+ lb and ran a base ET of 17.22 at 80.01 MPH. Then they started removing parts from it in stages to see how it performed - eventually reducing the car to just a 2900 lb frame with a roll bar (for safety) that ran 13.55 at 100.83 MPH. Since there is no argument that the 440 makes more power (you said that yourself), your "413 is better in a heavy car" theory opposes simple physics - buddy...

I'm going to respectfully bow out here since further discussion serves no useful purpose. There is an old saying - "A man convinced against his will is of the same opinion still." The length of this thread serves as evidence of that truth. The only thing that everyone here can agree on is that they disagree. Everyone has their own viewpoint, just like every cow has it's own moo-point - all of which have absolutly no bearing on the facts. The fact is that Chrysler went to larger displacements for performance applications and the 413 was relegated to workhorse duty in trucks, MHs and industrial applications. 413s were great motors for their time, but they were eclipsed in the displacement race. My : If you have a 413 - build it if you want to, and be happy. I would go with Dogdays's recipe if it were me, which would make a nice street motor on the cheap. If you don't already have a 413 - look for a 440. They are much easier to find, and enjoy a whole lot more aftermarket support.

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As for the bore tech, a larger bore with the
larger valves does make power, particularly
midrange to top-end. When WEIGHT is applied
to the vehicle it's power at low end is
diminishing and require more rpm to launch
it effectively. Long strokes with moderately sized
valves do enhance low and midrange TORQUE to
where a vehicle with weight is moved relatively
EASIER. If the two characteristics are combined
(sorry guys but I gotta give them their props) like in the Buick 455, you would have the
best of both worlds!! They make ungodly TORQUE
and ASTOUNDING HORSEPOWER. SIMPLY PUT
be happy with the mill you have or built, if you
are not happy get the one you want. If you feel
that your mill is SUPERIOR prove it, line it up
at the tree and run it.