I am currently building a '68 GMC Suburban. I have a Gen IV 6.0LS and 6L80, using wiring harness from PSI. engine cranks but that is it. I have a ECU...
I was just planning on tuning with the wideband using the ve tables. Its geared way to high for sure thinking of putting a different gear maybe 411....
VBB sorry for the delayed responce, yep checked plugs (finally I know... but I did it) and they did not appear to have detonation signs, again there...