by spencerforhire » Thu Jun 16, 2016 7:12 am
700 cold sounds about right, but "cold" is not a precise term; it might be 700 @ 50f and 550 @ 70f. Apparently, GM used a bunch of different senders in the 70's, with variations between both years and platforms. I think I have a 76 GT sender somewhere I can test.
Also to confuse things, a sender will produce varying readings dependant upon where it's installed. In the cylinder head of an SBC between #1 and #3 will result in the highest reading on the gauge, then in the front coolant passage of intake manifold a bit lower, then in the water neck housing lowest of all, only producing an accurate reading when the thermostat opens.
The "fleet"-
72 Vega HB Drag Car -383/'Glide/9"(9.35@146.19)(5.94@117.28 1/8th)
77 Vega Estate wagon- project(someday)will have TPI305/T-5, S-10 spindles/axles
76 Vega GT- 400/4spd/9" retired from active duty(rusty)
06 Silverado 2WD ex.cab daily
03 Silverado 2WD ex.cab (retired)
06 Haulin' 20ft enclosed car transporter
06 GMC Canyon Shop truck
07 Colorado project( 5.3 4L60e swap)
99 Saturn SL1- wife's car
01 Saturn SC2- son's project
07 Saturn Ion Redline project
and 4 more Saturn "parts cars"
Note- the very act of listing all of these has made me realize I have some kind of problem.....
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