340-6pak Dyno Results

Could you comment on how you arrived at your decision on compression? It seems to me even with the aluminum heads you must be close to the upper limit for running pump gas. I suppose not getting too wild with your cam helps.

I'm interested as I have a '73 340 rebuild planned. I'd like to build it to be similar to an early 340 or maybe a little better. With the factory compression at 10.5 this is a major consideration in my planning. In particular, I have to decide whether to invest in aluminum heads.
Thanks
Arlie