Installing Oil Pressure Sending Unit on your LS swap? LOOK HERE! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

kSStamp0182 · 11-13-2011, 01:41 PM

found this nice little part today that replaces the oil cooler block off plate. just ordered it. i am running a '91 Suburban sending unit with 1/4 NPT so it will need to be drilled & tapped.

it is the one farthest to the left.

i started with the one far right, but it was difficult to drill straight and tap, & now i have a seeping leak from it. it was also too close to the manifold IMO. and sticks straight out. this is much cleaner looking.

Far Left.
97-2000 Corvette Part Number 12551587
Comes already drilled and with a metric thread M12 x 1.5
Drill out the metric thread using a 7/16" drill
Tap 1/4 pipe thread.

Centre
Fbody (No Longer available from GM new**) Part Number 12551595
Comes blank (not drilled and no thread)
**Part superceded by 12577903

Right
Part Number 12577903
Comes blank (not drilled and no thread)

(not my picture, but here's how it looks installed.)

BR3W CITY · 11-13-2011, 03:15 PM

nice find. I drilled and tapped since I already had the piece, but it IS really hard to get straight.

Shon · 11-14-2011, 10:15 AM

I just take the stock oil pressure sending unit out of the block and get a Autometer 2268 ( i think thats the number, got it at home) and put the manual gauge in there.

PCM doesnt use the oil pressure to control anything so its not needed.

BR3W CITY · 11-14-2011, 01:22 PM

I left that one connected since my harness had a provision for it; only thing it really gets you is the ability to see the oil pressure reading on certain obdII devices; even though the computer doesn't use the readout for anything.

gringoloco · 11-14-2011, 03:48 PM

Doesn't the ECM cut power at low pressure? If not, it should...

Shon · 11-14-2011, 03:55 PM

Quote:

Originally Posted by gringoloco

Doesn't the ECM cut power at low pressure? If not, it should...

None of the ones I have dealt with have this provision.
I do not even see an SES/Code for it.

gringoloco · 11-14-2011, 05:02 PM

Hm, seems it would be easy enough for GM to do. Made sense in my brain. Oh well...

*now back to your regularly scheduled thread*

kSStamp0182 · 11-14-2011, 06:34 PM

Quote:

Originally Posted by Shon

I just take the stock oil pressure sending unit out of the block and get a Autometer 2268 ( i think thats the number, got it at home) and put the manual gauge in there.

PCM doesnt use the oil pressure to control anything so its not needed.

well my gauges are electric. a complete cluster from a 91 burban. using the 91 burban sending unit. figured the newest design would be the most accurate (besides mech)

11-13-2011, 01:41 PM	#1
kSStamp0182 LSX addict Join Date: Jun 2009 Location: Tyler, Texas Posts: 262	Installing Oil Pressure Sending Unit on your LS swap? LOOK HERE! found this nice little part today that replaces the oil cooler block off plate. just ordered it. i am running a '91 Suburban sending unit with 1/4 NPT so it will need to be drilled & tapped. it is the one farthest to the left. i started with the one far right, but it was difficult to drill straight and tap, & now i have a seeping leak from it. it was also too close to the manifold IMO. and sticks straight out. this is much cleaner looking. Far Left. 97-2000 Corvette Part Number 12551587 Comes already drilled and with a metric thread M12 x 1.5 Drill out the metric thread using a 7/16" drill Tap 1/4 pipe thread. Centre Fbody (No Longer available from GM new) Part Number 12551595 Comes blank (not drilled and no thread) Part superceded by 12577903 Right Part Number 12577903 Comes blank (not drilled and no thread) (not my picture, but here's how it looks installed.) __________________ -1982 C10 SWB GMC Sierra [undergoing 6.0/4L80E swap with mild restoration]

11-13-2011, 03:15 PM	#2
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: Installing Oil Pressure Sending Unit on your LS swap? LOOK HERE! nice find. I drilled and tapped since I already had the piece, but it IS really hard to get straight. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

11-14-2011, 10:15 AM	#3
Shon Registered User Join Date: Sep 2005 Location: sc Posts: 1,203	Re: Installing Oil Pressure Sending Unit on your LS swap? LOOK HERE! I just take the stock oil pressure sending unit out of the block and get a Autometer 2268 ( i think thats the number, got it at home) and put the manual gauge in there. PCM doesnt use the oil pressure to control anything so its not needed. __________________ 71 Cheyenne C10 LWB cam'd 6.0/T56 Swap

11-14-2011, 01:22 PM	#4
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: Installing Oil Pressure Sending Unit on your LS swap? LOOK HERE! I left that one connected since my harness had a provision for it; only thing it really gets you is the ability to see the oil pressure reading on certain obdII devices; even though the computer doesn't use the readout for anything. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

11-14-2011, 03:48 PM	#5
gringoloco A guy with a truck Join Date: Sep 2005 Location: Germany, for now Posts: 5,921	Re: Installing Oil Pressure Sending Unit on your LS swap? LOOK HERE! Doesn't the ECM cut power at low pressure? If not, it should... __________________ -Chris Instagram _elgringoloco_ '70 Short-Wide How to: Ruin a perfectly good C10 ‘70 Blazer ConversionHow To: Ruin a Perfectly Good 4wd '72 Highlander How To: Ruin a Perfectly Good K/5 (SOLD) '72 Blazer 2WD How to: Ruin a perfectly good Blazer (SOLD) '05 Yukon Daily Driven (not so stock) Yukon (SOLD) ‘07 Yukon Denali (daily) Members met list: SCOTI, darkhorse970, 67cheby, 67cheby'sGirl, klmore, porterbuilt, n2billet, Fastrucken, classicchev, Col Clank, GSFMECH, HuggerCST, Spray-Bomb, BACKYARD88, 5150, fine69, fatbass, smbrouss70, 65StreetCruiser, GAc10boy

11-14-2011, 05:02 PM	#7
gringoloco A guy with a truck Join Date: Sep 2005 Location: Germany, for now Posts: 5,921	Re: Installing Oil Pressure Sending Unit on your LS swap? LOOK HERE! Hm, seems it would be easy enough for GM to do. Made sense in my brain. Oh well... now back to your regularly scheduled thread __________________ -Chris Instagram _elgringoloco_ '70 Short-Wide How to: Ruin a perfectly good C10 ‘70 Blazer ConversionHow To: Ruin a Perfectly Good 4wd '72 Highlander How To: Ruin a Perfectly Good K/5 (SOLD) '72 Blazer 2WD How to: Ruin a perfectly good Blazer (SOLD) '05 Yukon Daily Driven (not so stock) Yukon (SOLD) ‘07 Yukon Denali (daily) Members met list: SCOTI, darkhorse970, 67cheby, 67cheby'sGirl, klmore, porterbuilt, n2billet, Fastrucken, classicchev, Col Clank, GSFMECH, HuggerCST, Spray-Bomb, BACKYARD88, 5150, fine69, fatbass, smbrouss70, 65StreetCruiser, GAc10boy



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