Not to knock a great run but, I would think you should get more out of that setup?

My car has gone 11.48@119... 70 Challenger 4-speed 4.10 dana, no cage weighting 3700lb with me...

440 30 over, stock crank, 10.1, Hughes solid flat .597 .613 .247 dur 906 stage 1 port job by Hughes, Performer RPM intake with 950 Holley....

and that is leaving very light...blew up to many 8-3/4's
2500rpm

1970 R/T Challenger 4-speed
1971 Demon 340 3-speed