318: What Will It Make?

I would guess about 300/300 give or take about 15hp, depending on your ignition, your tune (jets, timing, curve, cam advance, total cyl. psi, etc.) and your exhaust system, but that's with a known 60cc head.

If you want to motivate at this altitude, it's all about torque and keeping a good vacuum signal. Get those valves open and closed quick.

Also, what pistons are you getting a zero deck out of? Are you milling the block? And how are you getting 60cc out of a 973 head? Milling?

The reason I ask is because I'm running a set of KBs and they sit .011" down and my 302 closed chambers with the same valves came in at 62cc. They were 61.5cc after milling .010" to square them up and I radiused the chamber edge to knock the hard lines off and got them back to 62cc. They would be closer to 61cc with flat faced valves. I wound up with 9.65:1 static.

I'm willing to bet that the car runs somewhere near a mid 14 up at Bandimere on those figures, with a good tune and 973 heads (usually 65-67cc). A friend was running 14.9 on an 8:1 318 with 973 heads, a 2300 stall and a 3.91 8 3/4 in a car with little to no interior in a '72 Dart with full headers and shorter exhaust, on a .444 cam.

You're probably at the same weight, higher compression. If you are running KBs, expect .011" from zero, unless you go .010" under or so on the factory deck height.