by cammerjeff » Tue Dec 06, 2011 7:03 am
Dick,
I know the 1980 Models received upgraded Emissions, that may have included an O2 sensor (I have never owned anything newer than 79 for an H-body) I know that many 1980 model year GM cars received Computors to control the Carb mixture and spark advance.
Sorry I am no help with the original question,
Jeff R
1971 Catalina Freeway Enforcer
77 Astre Formula, some day soon powered by a 215 Buick V-8
1973 4-speed Lemans Safari STOCK!!!!! 1978 Catalina Safari
2006 Mallet Solstice, 6.0 LS2, 6-speed manual
2009 Solstice Coupe, 2.4, 5-speed Manual