Doc, others: trans temp gauge-- where to put sensor?

Vehicle is an 89 S10 Blazer, 4.3, 700R4, 4X4.
The instructions say to install the temp sensor for the gauge I just bought in the tranny pan by dropping the pan, drilling a hole, and installing the
bung there.
I already have a drain installed. It's too big to fit the sensor, and the hole is too big for me to replace that bung with this one. Besides, I welded it in place.
It was enough of a pain in the ass to put this bung in last time, what with the trans crossmember location and all, that I REALLY don't want to drop the trans pan again. Only about 3K miles on the trans since last service.
Anyone got input on where else I might be able to fit the bung? Doc- how did you do yours?
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burntkat IS AT sc.rr.com wrote:

I put mine in the test port on the left side. It is an autometer and the threads matched like it was made for it.
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bought
welded
with
the
did
Kat,
I put my sensor inline on the HOT line (line from trans to cooler). I did this by cutting about 1" out of the line (use a pipe cutter!), using a compression T-fitting. If you need the hardware I believe I have a spare compression T in my garage that should fit perfectly. If the sender doesn't fit the T, just go to Lowes and buy the appropriate NPT adapter.
Doc

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you can also pull out the plug on the pressure test port (driver's side, just behind bellhousing) and screw in the sensor there. the plug is 1/8" NPT w/ a 11mm (iirc... it's been 2 years) head on it. it's where I have my sender. it gives a more weighted response than using the hot out line, though I'm considering (amongst my many projects) adding a sender to the hot line w/ a micro SPDT switch to switch between them.
-Bret
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installing the

the
what
drop
how
did
spare
doesn't
I like the hot as it tells me the absolute worst my AT is seeing. I never see above 160* (massive Hayden up front), so I know even if the cooler isn't doing a damn thing she isn't getting feed ATF hotter than 160*. I've been thinking along your lines lately and am planning to install a sender in the cold line to see just how cool she gets the ATF on a 90* day.
Doc
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Thanks very much for the help, folks. I like the idea of two senders to one gauge, too.
Anyone know a part number for a sender?

just
and
I
service.
Doc-
I
a
isn't
the
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Good deal. I have a spare 700R4 <actually the one that came out of the Blazer, destined for my Jeep> in the garage, so I'll check the threadpitch against the sensor.
Many thanks, folks!!

installing the

the
what
drop
how
did
spare
doesn't
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thought it was something like that. How'd you ground her?

the
the
doesn't
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drop
how
did
spare
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I just finished putting in a Derale 13105 (10 row---3/4"x12x16) cooler for my Silverado/700R. I have some concerns this size cooler may over-cool the 700R, but haven't seen any specs indicating what that temp would be. I also plan to by-pass the cooler when cold weather comes back around... what's the coolest weather/temps [before by-passing] they should be used with? PS... it is inline with the radiator...
Thanks
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probably want to start your own thread.
Short of arctic temperatures, it's not possible to overcool an AT.

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