timing question first time on forums

[frankgomez65]

How who i set my timing if i have a street stip cam comp 302 dur.
If i try setting to stock specs it not right. It a sbc 350 with flat top piston with 2.02 heads with 650 holley, with headers

[Oldf100fordman]

But what did the cam manufacture recommend for timing? A cam with that much duration needs much more advance.