Oil Pressure switch on TBI Engine - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bradford · 08-14-2011, 11:57 PM

I got a TBI crate motor that Im about to slap in my truck next weekend.
I noticed it had what seemed to be two oil pressure sending units. One on top and one by the oil filter.
I assume it is for the TBI computer.
This motor has the mechanical fuel pump provision on it. I guess because its a crate/replacement engine?
I am putting an Edelbrock manifold and carb on it.
What do I need to do to utilize one of these oil pressure units?
Do I plug one of them? I guess I could use the unit off my current motor?
Thanks

J Knight · 08-15-2011, 12:11 AM

I wouldnt use either one of them. put the sending unit off of your old motor in the same location as your old motor and plug the other hole.

Rogue_Alphonse · 08-15-2011, 12:13 AM

Quote:

Originally Posted by J Knight

I wouldnt use either one of them. put the sending unit off of your old motor in the same location and plug the other hole.

This.

when I took the TBI out of my C-10 [converted] and dropped it in my 1988 K5, I had to relocate the oil pressure sending units. The old 1988 engine had a blockoff cap for the other spot, which I used on the "new" engine.

bradford · 08-15-2011, 12:17 AM

Quote:

Originally Posted by Rogue_Alphonse

This.

when I took the TBI out of my C-10 [converted] and dropped it in my 1988 K5, I had to relocate the oil pressure sending units. The old 1988 engine had a blockoff cap for the other spot, which I used on the "new" engine.

OK so the one on the side is where I need to put my old one on?

Rogue_Alphonse · 08-15-2011, 12:24 AM

Quote:

Originally Posted by bradford

OK so the one on the side is where I need to put my old one on?

Where ever your old engine had its oil pressure pickup, use that.In fact, if it worked, use the one from your old engine. Figure out a way to cap off the other one. That's what I did.

bradford · 08-15-2011, 12:26 AM

Quote:

Originally Posted by Rogue_Alphonse

Where ever your old engine had its oil pressure pickup, use that.In fact, if it worked, use the one from your old engine. Figure out a way to cap off the other one. That's what I did.

OK. Thats what I figured.
Thanks alot guys.
I cant wait til next weekend. I hope all my parts make it here before then.

Zane M · 08-15-2011, 12:12 AM

The one by the filter is for the oil pressure gauge. The top unit is for the computer sending unit.

08-14-2011, 11:57 PM	#1
bradford Registered User Join Date: Oct 2009 Location: North Carolina Posts: 151	Oil Pressure switch on TBI Engine I got a TBI crate motor that Im about to slap in my truck next weekend. I noticed it had what seemed to be two oil pressure sending units. One on top and one by the oil filter. I assume it is for the TBI computer. This motor has the mechanical fuel pump provision on it. I guess because its a crate/replacement engine? I am putting an Edelbrock manifold and carb on it. What do I need to do to utilize one of these oil pressure units? Do I plug one of them? I guess I could use the unit off my current motor? Thanks Attached Images

08-15-2011, 12:11 AM	#2
J Knight Registered User Join Date: Jun 2011 Location: Baytown TX Posts: 2,219	Re: Oil Pressure switch on TBI Engine I wouldnt use either one of them. put the sending unit off of your old motor in the same location as your old motor and plug the other hole. __________________ John 82 Chevy Silverado 350ci/TH350

08-15-2011, 12:12 AM	#7
Zane M Registered User Join Date: Dec 2006 Location: SLC, UT Posts: 706	Re: Oil Pressure switch on TBI Engine The one by the filter is for the oil pressure gauge. The top unit is for the computer sending unit.



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