Hey Im new to tuning and I have managed to adjust my ve and fuel table's respecably without datatlogging. But Im wondering if anyone has a decent spark table that I can look at?? I have mild cammed 350 running the 7747 ecm with a modified AYUB bin. Im just not sure that im looking at the right tables- spark advance(sub warm)?? Or spark advance (sub cold) ?? At least these are the ones that I can find. Thanks for any assistance!!!

 

Up in the sticky's, Tuning Guide Book, under the '8746/8063/7747 ECM sectionn. There is an article on '7747 spark timing. Explains how it all fits together.

With the '7747 being from a truck they don't have a lot of timing in stock form. And SA timing is vehicle weight and chamber design dependent.

RBob.