1/4 mile times

I pretty much had the same motor.
440 in a 69 charger
the compression was only 9 or so
430 gears
bone stock 906 heads.
locked out dis. @ 37*
stock leafs springs
750 holly. tuned with a 12.8 a/f
3200 stall

These times are from many many years ago..if i remeber right:

60* where around 1.90
mph was 107 @ 12.60's

when you get into changing heads that could flow alot more you might hurt other things in your combo.

good luck