336.6
10 degrees with a stock cam
If my math is correct : using a 4 inch bore and a 3.48 inch stroke , with the cylinders bored .060 , just over ( 360 cubic inches )
413
The bore adds about 10 cu. inches to make it a 337
any Chevy 305 block can be safely bored .060 over. if you have a good block, with thicker cylinder walls, it might be .080 borable.
413 cid
4.310
Sounds like a 343 to me. But for parts its a 283 bored 60 over
If my math is correct , just over 362 cubic inches ( 4 inch bore x 3.5 inch stroke , bored .060 inches )
a Chevy 350 bored .060 over would be 360.4 cubic inches
468