i recently had a 355 2 bolt 882 heads 440/440 lift cam holley street dominator and 650 carb with stock 700r4 trans and it ran 14.14. the motor spun a couple bearings. anyways i baught a bigger cam for it 488/510 lift with 240/244 duration got new pistons wich will put the compression ratio to about 10:3.1 same intake and carb might get new heads but with the same heads and with a turbo 400 shift kit and 3500 stall what do you think it will run. thanks

will it atleast break 13's

oh god...I would hope so at least.

what would be a good guess on what it would run

13.7 ditch those heads for ANYTHING and go faster.
vortecs, L98s, 113 casting vette heads, whatever