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I am putting a new intake on and realized that there is one hole that isn’t like the stock intake. (2101 edelbrock) Now my question with this hole there comes a sensor that originally had one line blocked off with a bolt and one plugged into the carb. What is it? Do I need it? And will have I have to find a bushing to thread on the sensor and then put the sensor in the bigger hole on the right?
That just opens or closes a vacuum valve, depending upon temp. Emission gear. If you have removed the gear then chunk the valve. Are those bolt plugs yours or just for when you pulled that?
It is emissions stuff. Ditch it. Will not fit in the hole on the right anyway once the rad hose goes on.
You might need the hole on the right of the intake as pictured for the temp sensor if the hole in the heads is not big enough. But they seem like they might be stock heads so you might be OK.
Certainly Removed Always Part. Or CRAP. It goes in the round file box on the floor of the shop.
The big hole on the right needs a NPT plug. They come in plain, black, red, blue. The radiator hose pretty much makes that port useless.
Use great caution when tightening down any fitting in those ports. Just a smidge of thread sealant and tighten just a pinch past snug. You can crack those threaded bosses if not careful.
NHollyy,
Is your vibration dampener on all the way, flush? I see some shiny crank snout in front of the timing cover. Maybe not.
OK, so you have a brand new intake manifold. And your going to put that horrid old thermostat housing on it? And with a new performance intake you wish to install a thermo switch that is on there for emissions control of your ign. timing. Seriously??
take a look here.
These anodised aluminium thermostat housings swivel 360 degrees. Allowing you to utilise that switch port if you wish to. As you can see I have a temp switch in mine. (for my EFI ECU).
These thermostat housings are available in a couple different designs and many different colors as well as plain aluminium. Sold everywhere.
also note, you can get good looking intake manifold bolts to complete your install.
I am putting a new intake on and realized that there is one hole that isn’t like the stock intake. (2101 edelbrock) Now my question with this hole there comes a sensor that originally had one line blocked off with a bolt and one plugged into the carb. What is it? Do I need it? And will have I have to find a bushing to thread on the sensor and then put the sensor in the bigger hole on the right?
1976
Thank you for any info, Nate
That TVS switch is for the EGR valve, looks like the new intake has no provision for a EGR valve. Screw it back into the old intake with a sticky note...
Its not the bolts themselves that you should be concerned about.
Its the threads inside the Intake carb pad.
What are the torque limits for tightening carb studs into the Intake? I am guessing 20 -25?
That should tell you something about the strength of the threads.
Yes, each bolt on that plate could handle 400 lbs. But the aluminum threads? Meh, not so much.
The bolt engagement is longer, but as long as the bolt is long enough (2.5 * diameter, or more, steel can be less, of course), the aluminum is not the issue. Especially not for a new intake.
GM makes blocks out of aluminum. The holes are deeper for more thread engagement.
But anyway, the OP likely does not need any vacuum switches, unless going for an NCRS award.
Sensor for intake
