Unported head quickness?

As cast Speedmaster heads, I bought the castings and had my engine builder put them together.
1968 Valiant full interior and glass minus radio. Gonna guess its around 3200 with me in it.
LA 360 stock crank and rods
Icon 741 pistons about 10.6:1
Oregon Cam Grinding 242/248 @ .050" .600" lift solid roller cam
performer RPM, 750 double pumper
Stock type 273 type adjustable rockers 1.5 ratio
Doug's Headers with a 17" header extension and some turn downs, no mufflers or exhaust yet.
Lock up 904 from a 1982 Cordoba with a TF2 shift kit
A PTC lock up converter that was supposed to stall at 3500 but is a bit tight at 2800 which is likely keeping this car out of the 11's at this point.
8.8" ford explorer rear end 3.73 Limited slip
Super Stock springs, slant six torsion bars, Mancini bolt on subframe connectors welded in.
26x8.5 Mickey T pro drag radial

First weekend out it ran a 12.20 @ 114.37mph