What I have found is this...
From the MF Dobbins "68-72 Corvette Fact Book", the '72 LS5 that he shows a pic of does definitely have a TCS solenoid, bolted to one of the coil hold-down bolts. It has a metal line, that goes from the carb, back to the solenoid, and then a small vac. line from the solenoid to the dist. In the pics, the solenoid has been by-passed, but it is there.
Now then...is that one an automatic or 4 speed car? Can't really tell from the pics, but...I can't see the vac. line for the trans, so I assume, in this book anyway, that this one is a 4 speed. Emissions applications were different back then for autos compared to 4 speed/standards. For instance, in '74, auto equipped cars did NOT have smog pumps....only the 4 speed cars did...go figure.
Looking back to 71, there does appear to be a vac. line going to the carb idle-stop solenoid on the small block(base engine), but not on any of the other engines in '71. I seem to remember seeing them like this back in the day, but for the life of me, I can't remember why there would be vac. on the idle-stop solenoid...
I'm not sure where the temp sender for the TCS would be on a '72 big-block, but it could be in either head...just depends on where your connector for it is. I know on
most small blocks, it is on the pass side.
You can leave the trans connector plugged in...it ain't gonna make any difference if you don't have the complete TCS system . If you unplug it, then you won't have a kick-down(passing gear), as that connector is also for the kick-down solenoid in the trans.
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Joel Adams
C3VR Lifetime Member #56
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