Oil pressure sending unit or switch, or a pipe plug if you don't use one there.

 

So...what do i need? im thinkin ill want a oil pressure gauge...

 

You'll need whatever's required for whatever gauge you use.

 

Oo...gotcha, so that can be added any time basically? Like I could plug it now and later (once I get gauges) put in whatever it is ill need for my gauge?

 

Yes as long as you've always got something plugging that hole you can put whatever you want in there any time.

 

Be sure to use a non-hardening sealer on the plug/fitting threads. NO teflon tape.

Also note that it is funny as all get out' when some one forgets to plug the hole. When the prime tool starts to move oil it looks like an oil well was just un-capped. And of course the person doing the priming ends up wearing a bunch of that oil. Seen that done, laughed so hard I thought I cracked a rib.

RBob.

 

Better yet when someone does it without priming. If the oil pump moves an impressive amount of oil when a drill is driving it, imagine when it's running at speed.

 

Thanks alot guys, I greatly appreciate the help!

 

its not funny when you forget to plug that whole when your the one drenched in oil, i did that on my very first engine build at 16, i felt like and idiot lmao

 

Ill be sure to plug it, thanks alot guys!

 

Make sure no trash fell/falls down into that oil passage.

I prefer to use brass or stainless plugs to avoid chance of seizing.
People have their favorites, but I prefer the orange/red high-temp RTV as sealer.

By the way your engine pic is blinding.

 

Thats what Im goin for...shes quite shiny. Its goin in a show car so its gunna be off the walls by the time im done.