Originally Posted by
inferno13
if your plug is coming loose i would also check the cooling head bolts to make sure they are tight, settings on mine are ...
LSN......3/4 TURN IN FROM FLUSH
HSN......1/2 TURN IN FROM FLUSH
IDLE GAP.... .07 GAP (EYE BALL MEASUREMENT)
It came loose due to my mistake - I apparently didn't tighten it enough (have checked plug before semi). In final it held just fine for full 30 minutes without coming loose.
To engine settings - is it with 7.0 venturi?