what do i set timing at

[sflem61]

converted 5.7 to carb because i didnt have wiring or board to make work in my truck, everything runs ok ,but trying to set the timing, i resd to set timing at 0 on one site then set at 4=6 before tdc on another , on old 350 the timing is set as much as 14 degree tdc, so what should timing be set at?



?