380 crate cam and stall converter

I race it a dozen times a summer.
Weighs 3300 with me in it.
26-8.5 slick
No dyno sheet but runs 12.4-5@110 in the 1/4 with 1.88 60 foot.
Got a couple of questions. What brand of plugs are you using? What is your timing set at? I have the same engine in my 66 Dart and have no idea where to start. I bought it somewhat assembled.