Distributor question

[Kiwi]

Anybody know what the initial and total advance timing specs were for a stock 350 4V V-8 fit to a 1971 Chevrolet C10 truck?

In addition, with regards to the stock cast-iron cylinder heads fit to a 1971 C10 with a 350 V-8 ...

1. What was the cc size of the combustion chambers (I think that it was 76 cc which yielded a lackluster 8.2:1 compression ratio)

2. What was the size of the intake runners on the cylinder heads (I'm guessing that it was somewhat near 180 cc's)