SW heat gauge

[P.J.]

I am trying to get my vintage SW heat gauge to work in my chevelle.I hooked it up to the Gm heat switch and It does not work. I grounded the gauge and the needle went right to the end ,so I know that the gauge works.Does this gauge need
a special heat switch???

PJ

[John Brown]

It needs a S-W 362 series sender.

What size pipe thread do you need, or what is the diameter of the hole, in inches? I have some new old stock S-W 362-AJ senders that are 3/8 pipe threads, or about 5/8 or so inches in diameter for the threads.

[P.J.]

Thanks John
the dia. of the pipe thread is 830 thousands of an inch at the cylinder head head and it is 14 threads per inch.
If necessary I can step it up from 3/8 pipe to 1/2 pipe if it is the correct sending unit for the gauge.
Let me know what you want for it
Thanks
Pj

[John Brown]

Peter, the 1/2" variety is available from

http://www.glen-l.com/inboard-hdw/sw-gauges.html

You need part number 90-975. Don't worry about it saying 100-240 degrees, because the Deluxe gauges just leave off the number 60 down at the bottom of the gauge. I didn't know what size hole you had, but I'd rather see you get the correct sender instead of having to use an adapter. Just glad I could help out.

[SuperNovaSS]

I have a bunch of NOS ones. The part numbers are 362AA, 362AH, and 363E. Let me know what you need.


Jason

[SuperNovaSS]