400 BB Mopar dyno test

We just finished a 2 part dyno session using a steel 383 crank, stock rods, stock block (.030 over), 906 heads with bowl cleanup and std size Manley valves.
We went with a Comp Thumpr cam, straight up, 9.8:1 compression, Holley 750DP, rpm intake and TTI 1 7/8 headers.
It made 427HP at 5700rpm and 443TQ at 4200rpm.

I will post the dyno sheet Monday.
Wow its great that you engine builders are posting info like this, I really appreciate it. Did you go with a Thumper over say an Extreme energy because the specs better suited what you wanted or for the rough idle? I see that the thumpers have a tighter lobe separation. Also is it a roller or flat cam? One more thing, seeing that this is an A body site it would be great to see what effect Schumacher shorty tri-Y headers have on the power compared to the big race headers, especially considering the cost, compromises and flat out pain in the *** issues the big headers cause in an A-body.