Timing question 318 with LD4B

Davis911s said

Thanks everyone
UPDATE: I put a Mr Gasket fuel gauge at the carb inlet form the filter, and it is only showing 2PSI?? Once engine is started it will idle and even rev up nice, but then it will die if you just quickly let off the fuel. But I am surprised it would run with this low fuel pressure. Is it possible the gauge isn't working , or more probable that the fuel pump the previous owner put in is this low of pressure? Could that low of pressure cause the backfiring when letting off fuel?

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Your carb does not care about fuel-pressure.
Your carb cares only about one thing, that the fuel level is always correct.
Fuel pressure is used to push the fuel to the carb against the closed or nearly closed float valve. Two psi when stopped and idling will be just fine. You can gravity feed that carb at zero psi when stopped and idling, and it will idle all day.

If it stalls when you close the throttle, have you considered that it is idling too slow? Turn the speed screw in (faster)about 2 or 3 full turns, reset the mixture screws to 2.5 turns and try it again. If the idle is too high, retard the timing. Your target is 600 to 700 with a stock to near stock cam. If you still have stalling or backfiring, you will have to hunt for a vacuum leak.
If you have a timing light try 10 degrees at idle. adjust the idle speed up or down as may be necessary.