Would like to get some more oomph from my 318

First off, you have a really nice looking car . The six pack hood you are considering will make it look even cooler. Anyways... I see a lot of things have been discussed here. My two cents, more converter. 236 at .050 cam in a 318 needs more than a 2800 stall. I would go right to a good 10 inch or even 9.5 inch converter. Even a 318 with a cam ten degrees smaller than yours would benefit from having more stall speed. Of course there are things you can do to the engine to improve the bottom end performance but you are still working with only 318 cubic inches . It's not going to be a torque monster. IMO, for a small engined car to be fast , it needs some combination of : rpm, forced induction/nos or light weight. Assuming a 3500 lb weight, you should only need about 280 fwhp to get in the 13s like you want. But you need to be well into your powerband when you leave the line, and have traction of course. Notice in the link that I'm providing, that the engine's torque peak is at around 4100 . At the lowest rpm tested(3000) it is down 50 lb-ft. If that engine was installed in a car, the difference in acceleration between a 3000 flash and a 4000 flash stall would be huge. And this particular engine has a shorter duration can than yours.318 Small Block Build - How To - Hot Rod Magazine