LS Coolant Temp Adaptor any good?
Just seems like it may give a false reading extending it out.
But if it works would be better than having to drill and tap the head..
Any input would be appreciated.
Thanks,
Matt
are you keeping the stock ls sender for the pcm? and then running one in the passenger head for the gauge? If yes, then the adaptor will be fine. factory GM gauges are off anyway, much less one thats 20+ years old.
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I had an auto meter mechanical gauge, but the "probe" portion was to large to fit in the adapter.
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Thanks to all for feedback..
I appreciate it!
The stock 86 SS monte sender has 3/8 NPT threads..
If I would have taken a closer look at John Bzdels LS1 install I would have already known this..

The one for Auto Meter says its for 96 and above "short sweep" electric water guage..
Im assuming the term means the resistance or cycle high to low?
Anyway, unless someone comes up with a sender thats compatible to the stock for an 86 SS monte thats has 1/8 or 1/4 npt threads.. Im drilling and taping..
A brass sending unit that was made to mount on a cylinder head would see more heat then on a hose..
Basically a sender is just a thermister thats paired with the guage to read a certain temperature based on resistance\temperature of the sender..and if that temperature varies, my guage will be off..
I did some digging and found the values to check my gauge at certain resistances\temps and surprisingly it was pretty accurate.
I'm drilling and taping.. Its not really a big deal.. I was just trying to save some effort..
http://www.autometer.com/cat_accesso...il.aspx?vid=30
Supposed to be for pre-95 gauges
Not sure if it would work... Still have to get around the problem with the deapth of the sender with respect to the metric to npt adaptor
from the description: This sender only works on pre-1995 gauges with a distinctive black mask on bottom of lens.
(Closest smile to a "black mask" next dude was second lol) 
Regarding "black mask" at the bottom...Probably talking about autometer style but odd when I plug in my application in a vendor for autometer... comes up with the same sender so dunno for sure..
I am not sure how I will do mine this year.
Tim
If so any pics and how much did it set you back?
My other alternative is getting a 1/2-14 tap and open the 12mm hole on the backside of the pasenger head.
If so any pics and how much did it set you back?
My other alternative is getting a 1/2-14 tap and open the 12mm hole on the backside of the pasenger head.







