<VV> Engine cylinder head temperature guage

[NicolCS at aol.com]

<snip> Mike said: Only the Corsa 140s and turbos (only  available in Corsas) 
had the 
threads for the thermistor. All others had  threads for the switch. If 
I'm not mistaken the Corsa snap switch had the  same threads as the 
thermistor. <unsnip>
 
Craig sez:
AFIK all 140 and 180 heads have the fine-thread, deep hole for the  
thermister, even if the heads came in a 140 Monza or 500.  All 95 and 110  heads have a 
shallower, coarse-thread hole.  Clarks sells an adapter for  95s and 110s so 
that all heads can accept the GM thermister.
 
Having said that,
If it were me,
I'd put in a Corsa dash and get: Tach, clock, head temp, and trip odo out  of 
the deal.  And, I'd convert the manifold pressure gauge (see my tech tip  in 
Communique a couple of years back) into a "factory" oil pressure gauge.   Now 
that's something!
 
If you HAVE to keep the 'ol Monza dash, use an aftermarket temp gauge with  
the sender bolted to the factory temp thermister location.  (so it won't  get 
damaged when changing spark plugs)
 
My 2 cents
Craig N.