S S skyhawk77 Mar 24, 2010 hey guys,I own a 77 skyhawk,231v6 from an 84 cutlass,390 holley.How far can I advance the timing and what are the gains from it? possibly..
hey guys,I own a 77 skyhawk,231v6 from an 84 cutlass,390 holley.How far can I advance the timing and what are the gains from it? possibly..
