Tuning with jets, Power valves and an O2 guage

BB73Challenger said
I would have to guess you can't get 93 octane ( that's what I use and can get easily here ) and your stuck with 91.
If you had to guesstimate your cranking pressure where are you p.s.i. wise?
Did you talk over build/selection with a builder/Lunati?
Are your Eddy's closed or open chamber?
Are you running vacuum advance on top of mechanical or just mechanical?
Are you using timing tape or a gun with dial +/-
I like the vacuum leak thought, but if your sure that's out of play lets move on.
I take it with your RPM drop you have an auto trans?
What was you "old" cams specs that seemed to run less det?
10.7 for your static comp ratio should be no problem with the right complimenting components, I'm curious as to what your dynamic comp. ratio is.

* I tested cranking compression on only one hole, cyl # 6. It was 188 before with the '509 cam. It tested 173 with this one.
*The cam suggestion came from a FABO member. I was asking for help on how to stop the detonation with the engine and the Lunati looked like a winner. I never spoke with a Lunati tech about it.
* The heads are the 84 cc closed chamber versions, unported. My pistons are .017 in the hole and the head gasket is .039. The calculated comp is 10.73 with .056 quench .
* I was running vacuum advance with the 509 cam but plugged it to stop detonation. It is still plugged.
* I am using a dial back timing light.
* 727 trans with a 9 3/4 converter. Stall is unknown.
* The old cam was the Mopar 292/509. The duration @ .050 is believed to be around 248. I tried using 1.6 rockers, thinking the additional lift might cut down on the detonation. It did not.
* My old dynamic with the '509 cam was in the upper 8 range. The dynamic now is around 8.13.