LO3 TBI Total timing advance, how much?

[olbap]

Just out of curiosity, how much total advance did GM typically program into
their LO3 305 TBI motors?
I know that it is a variable thing so just an approximation relative to
normal engine temperatures, etc would be cool.
Im thinking my current setup would want total timing in the upper 40s, just
wondering how off it is right now.

thanks,
Pablo

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