318 cam

AJ/FormS said
The 340 cam installed at 110, has in Ica of 64*. In a 10/1 340, this will make about 163 psi and a modest V/P of 129 .

The 318 cam installed at 108 has an Ica of 48*. In a 10/1 340, this will make about 187psi and a super strong V/P of 166

Whats V/P?

AJ/FormS said
And the bad news is, that the gasolines of today, no longer have the octane to support 187 psi with iron heads at full power.

Have to disagree with this statement. A local guy had no problems running 240 psi in 87 pump fuel. Granted he was not the ordinary guy on a forum but a well accomplished tuner who pushed the boundaries of combustion but still he would often state that people run too high an octane fuel for the cylinder pressure they run. There's more to detonation than just octane numbers.