On most stock SB 350s the timing should be fine at 6-8 degree's Before Top Dead Center AKA BTDC. However if the cam is not stock you may want to contact the cam's manufacturer for the best timing suitable for your cam. I personally set the timing until I obtain the best performance I want to achieve. , EzForJesus
If you are looking for the best performance possible, get a timing light that will check your timing at full advance. Start off at about 40 degrees total timing (engine running above 2800 rpm) and vary it up or down a few degrees until peak performance is found. Best accomplished at a drag strip on test'n'tune night.
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