ok the title may be confusing but I dont know how else to title it .

anyways, after swapping intake manifolds I noticed that at the front of the manifold, theirs two holes tapped into the coolant passage.. for the coolant temp sensor and the feed line from the heatercore..

now on my new edelbrock manifold, I see theirs a third hole drilled to the left of the coolant temp sensor.. what could this be for? I had to take an old broken coolant temp sensor to plug it for now.. but is thier any use i could make of it?

 

temp gauge, idiot light, flower pot anything you can think of. the broken senser makes a good plug and doesn't look near as hacked up as using a pipe plug from the hardwear store.

 

When I have an extra threaded hole to plug I like to use stainless pipe plugs that take a allen wrench to tighten them, looks a lot better than the plain galvanized square headed plugs.

 

Edelbrock manifolds are designed to work in a wide array of applications. You'll often end up with a hole or two (or three!) that needs plugging. I second Dart's suggestion for aftermarket plugs- they look a lot better than the galvanized stuff from the plumbing supply shop! Check with you local speed shop for them.

 

hey question.. would i tbe ok to plug my fan switch in their instead the side of the block because thier, the wire always tends to burn up on my headers.

 

It would work just fine.

 

might be slight diferance in temps from head to intake. the head would be point of highest temp in the engine

 

its a 180 degree coolant from hypertech so im sure that will make up for it. thanks, ill do that tomorrow, and from the side of the head.. should i plug that up? is that a coolant passage or just a hole drilled into the head?

 

That needs a plug. That hole is tapped access to the coolant port.

 

cool thanks.

 

The '85-88 intakes have sensors for coolant temp and a cold start sensor for the ninth injector, plus the core tap, IIRC.

I'd plug the one on the manifold... actually I did on my big mouth manifold. :shrug:

 

you say i should leave the hole pluged on the manifold and have the fan switch plugged into the head? even considering the wires like to burn up on the headers?

 

I never had a problem with the wire burning up with headers... well, not that wire. I did have one connector crumble, but at almost 20 years old, it's kind of expected. :shrug: