P-51 timing

557LX said:

I have a 557 with P-51s. 12:1 comp. What do you guys suggest for timing on something like this. Its at 29* right now. Close?

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Anywhere from 27 to 31 should be close; every application will be a little different.

I have 521 with p51 heads 13to 1, just dynoed and they liked 31 the best on my tune.

Got mine at 28 degrees dyno like this number.
The initial at 16-18 degrees. IF your running locked out the initial won't matter but for my street motor it made a huge difference in idle and staying cool to run the high initial advance.