390 w/open chamber heads

I have a 318 and a nice set of 360 heads. The heads are 596s ('80-'85) open chamber with 66-72 cc chamber. I will cc the heads and do a mild port job (open them up a little). So that I don't get any wild answers or questions about a drag motor build....I'm building a torque monster, nothing over 5500. I'll be running a 200R4 with 3.08s or maybe 3.42s. Don't think I'll need lower rear gears with the low first gear in the 200R4. This will be a daily driver and I plan to occasionally stomp on it just to see the look on peoples' faces.
My question is this....I've read a lot about quench and the closed chamber heads. I have a pair of 302s on my 318 (904 trans) and I wasn't impressed with the results. I mean it has a pretty good low end with the 308 gears but I want to be put back in my seat. With the open chamber 596 castings I'm not going to get any quench BUT since I have all that stroke I should have no problem getting good compression (9.5 to 1). In fact, I'll have to be careful not to get a high dome so that can't run on pump gas.
The 390 will go into a '69 Barracuda. I guess I'm worried about getting "ping" (detonation) since I won't have any quench. Has anyone built this combination before. No super high lift cam, no super high RPM, no super low gears, no quench. I want to be able to cruise on the highway and also come off the line like a batouttahell. Hoping for at least 325 horses!!
Forged steel 4' stroker crank
Ferrea SS valves 3.02, 1.88
SIR6123 5140 forged steel rods
2176 Performer intake
92-02 mag Truck exhaust on pass side, 340 exhaust on drivers
2 1/2 pipes (twice pipes with crossover) all the way back
Edelbrock carb
Port matched intake and exhaust
Haven't decided on pistons yet
Can't get cam made until I cc heads and get chamber volume

thanks in advance,
Treblig