5.9 Magnum Torque motor build?

Hi Wyrmrider!

The motor's been dyno-tuned. Here's the dyno chart. I'm pretty happy with the results. 417 peak TQ at 3700 RPM. That's pretty good for a motor with a fairly stock idle, good vacuum, and assuming longevity. What surprised me was the extent of the power band: 90% of peak TQ from the bottom of the chart (2800) to 5100. 363 HP at 5000. 90% of peak HP from 4200 to the top of the chart (5200). The HP peak had a bit of a nice mini-band, too. I bet the thing would have had 350 through 5500 or so. The tires will not be happy about this. By the way, my name is Maurizio.
And I bet the torque extends well below the bottom dyno RPM of 2800 based on the VE numbers holding steady down to 2800...

FWIW, welding on a collector extension to get to 18-20" long collector will improve low-mid range torque too. Easy to get that; any muffler shop can do it.