What kind of car do you have? I have a question for you. How do you like your turbo action converter? i am getting ready to order one fore my 440 73 dodge dart.I have a engine combo pretty close to what you have except I have stock size valve, home ported 906 heads and 1.6 roller rockers. I am running 4.10 gears and 275/60/15 M/T street radials. my intake is a mopar m1 tunnelram with 2 carter 750 carbs.I am using a comp cams 305-525 hydraulic cam. In my car it ran circles around my mopar 292-509 cam. I made my frist pass with it in my 73 dart last weekend. but i have a converter that is stalling over 5200 right now. so i think there might be some more in it. here is my fastest pass of the night.

60 ft- 1.6483
330- 4.8464
1/8 et- 7.5760
1/8 mp- 90.05
1000 et-9.9467
1000 mph-102.02
1/4 et-11.8555
1/4 mph-110.02

this same engine in my old 65 plymouth with a no name 3500 stall i have dipped into the 11.70 at 113 mph. Now i dont know if your car will run the same as mine but our car combos sound real close to being the same. best of luck to you on your goal. Mopar65