13mm p pump timing

Ford15

Ford15

I need a cheaper hobby
How much timing should be ran for a 13mm p pump full time puller? 36 degrees is where I'm at with my 12 mm pump should that change with a 13mm?
 
Quicker injection rate with the same fuel amount should be less. On mine that's a drag truck runs best at 31, if that helps any.
 
34-40 seems to be the range but like all has said depends on a lot of stuff done to the motor and if the pump has any work done to it like quick rate cam and what it is flowing at.
 
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