Originally Posted by
dave w
Everyone tunes differently. I tune the '7747 with VE1 and VE2 added, then VE2 zero. I live on the West Coast, so by law, all grades of pump fuel is required to have 10% ethanol. My fuel and spark tables are adjusted according the pump fuel available.
The attached '7747 .bin has many modifications, including PE and AE. It's from an actual running / driving 350 Vortec in a Jeep YJ. I'm sure the fuel and timing are not going to be exact for a heavier Full Size GM Pickup / Suburban, but would very likely be close.
I 100% agree with Six_Shooter about checking the spark plugs in the Vortec engine. I helped a F-Body owner who did a Vortec 350 swap, and installed the wrong spark plugs because he told the parts counter person the Make / Model / Year of the F-Body he wanted spark plugs for.:mad1:
dave w