ign. timing 340 vs. 416

I am running the KB745 step dish forged pistons at zero deck, closed chamber Edelbrock heads with .039" head gasket on a 4" crank SB stroker. Running 93 octane pump gas. Most people I talked to think 32 total is best but Ryan at Shady Dell thinks I should run 35. I have mine at 35 total now but plan to go to chassis dyno soon and try less total timing and see what happens. I definitely don't think I should be running more.

In the book How to Build Big Inch Mopar Small Blocks most of the engine combinations they have listed in the back run 35 total, one runs 34 total, and another runs 36 total.

I used to run 38 total timing on my stock '69 340 with original pistons and open chamber X heads and that worked well.