What is the spark plug gap on a 1979 350 with vortec heads?

Answer 1

Listed in your owners manual and under the hood on a placard. Also the parts store where you buy the plugs can provide this info.

Answerif you are using an HEI distributer like 1975 up then set the plugs @ 0.35 also i prefer AC plugs to all else . on some small block,s AC R45TS is the best bet if you are running real lean some times you will find that a different heat will do far better but you have no way of knowing until you run them and see how it dose .in most cases the AC R45TS will be the ticket and some times the R44 ST will do better you have to go out and run them to see what the performance is like and im ttalking a few day,s or a couple of tank,s of fuel If it ain't got a Bow Tie what good is it . PS stay away from later HEI distributer,s wit 5 pins. use the 4 pin brain they are the most trouble free of all the ignitions that are out there . but not the highest performance you can get. Just very reliable.