my 367 has never run anything but 87.
She has run various cams from 249*, to 223*, to the current 230*, all @.050..
She has always run between 10.95 to 11.3 Scr, and from 177 to 195psi
She has always run full Power-Timing .
She has never detonated.
My secret, if you can call it that,
is Alloy heads,
which I run at 207*F.
This engine currently has over 100,000 miles on it.
That 223* cam was pretty good on gas, but the secret included; being geared for 75mph=1850 rpm, mega-timing, and tiny primaries in a custom-tuned 600Holley.
