8 degrees on older engines
Depends on what year 350. It can be 2 degrees BTDC or 4 degrees BTDC. I would try 4 degrees and see how it runs.
6 to 8 degrees BTDC.
8 degrees BTDC.
4 degrees advanced, or BTDC.
4 degrees advanced, or BTDC.
4, to 6 degrees advanced, or BTDC.
4 degrees advanced, or, BTDC, should work just fine.
4 degrees BTDC.
4, to 6, degrees advanced, or BTDC.
6 degrees BTDC / Before top dead center
Most 350 chev's are 4degrees btdc to as much as 12 btdc if it is computerized the computer will adjust it from zero to 40 degrees btdc (Before Top Dead Center) If you look on line you might track down the exact answer.
4 degrees before top dead center / BTDC