104 octane for my 360 ?

Check out the hot rod magazine test on fuel.
It's not always the octane according to the test done by hot rod magazine. Race gas burns a little different and can possible help a motor just plain make more power.

I agree with stroked 340 that it is a wast of money most of the time,but in his situation, and if he is correct about the motor pinging, then it could let him tune the engines timing in with out any problems.

I was wondering what the size of the cam was @ 50 to get an idea about the duration and his cylinder pressure.
The lift is .480 but what is the duration @ 50?????