Okay, so forgetting about the actual dyno number.......
How much difference in power would you expect to see between your motor, as it is now, and a 10.7:1 stock stroke 383 with unported 906’s, .560 lift solid cam, an RPM intake and Hooker Competition headers...... with both motors being tested back to back at the same dyno, on the same day?
What was the date you went in the 10’s there?
I think one of my friends was running there that weekend.