Unported head quickness?

1965 plymouth belvedeere II weighes 3500 with me in it.
73 440 0.030 over ross 12.5.1 dome pistons. but only 11.1.1 with 84CC head
stock steel forged crank
eagle rods
Out of the box edelbrock 84 cc performer RPM heads
mopar 312/590 solid cam installed at i think 104
indy 1.6 roller rockers
mopar M1 tunnelram box stock edelbrock 750 carbs
tti 2x3-1/2 headers

727 with 5600 stall
dana 60 with 4.56 gears
M/T 31x10.5x15W slicks
ran 10.50 at 126 in the 1/4
6.60 at 102.8
1.41 60 foot
like a dumb *** i sold it because of my EX wife
here is a pic of the car.
damn i miss that car.
thanks Mopar65

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