Using Factory LS1 Oil Pressure Sending Unit for Gauge
#1
Using Factory LS1 Oil Pressure Sending Unit for Gauge
What are your gauge readings when using the factory LS1 oil pressure sending unit instead of re-using the factory 3rd Gen sending unit?
I've had a hard time finding an adaptor fitting for my factory sending unit. The original one on my 1991 is a 1/4" NPT I believe. I still have the one that came out of my 99 Camaro LS1 engine.
I've had a hard time finding an adaptor fitting for my factory sending unit. The original one on my 1991 is a 1/4" NPT I believe. I still have the one that came out of my 99 Camaro LS1 engine.
Last edited by cowansauto; 11-11-2013 at 11:55 PM.
#2
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Car: 86 Turbo Camaro
Engine: 427LSX
Transmission: 4L80E
Axle/Gears: 9" 3:25
Re: Using Factory LS1 Oil Pressure Sending Unit for Gauge
On the drivers side of your pan there should be a fitting with two bolts on it.... You can take that off... drill and tap for 1/8pipe (NPT) and put your stock 3d gen sending unit right
in there.
Hope that helps,
Scott~
in there.
Hope that helps,
Scott~
#3
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Re: Using Factory LS1 Oil Pressure Sending Unit for Gauge
Autometer carries the bushings you need to put an 1/8" NPT fitting into the LS series blocks. They arent that expensive... I think i also found them on McMaster Carr/Grainger.
Another option is to destroy the LS1 sender, drill the metal part and tap it. I think Ive seen a few guys do that with success.
And what UR50SLO said is also another option. That'll work good too.
J.
Another option is to destroy the LS1 sender, drill the metal part and tap it. I think Ive seen a few guys do that with success.
And what UR50SLO said is also another option. That'll work good too.
J.
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Car: '88 Iroc-Z
Engine: LS1
Transmission: 4L60E
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Re: Using Factory LS1 Oil Pressure Sending Unit for Gauge
I used a 4th gen (2002 LS1) sending unit on my conversion. It's a one wire connection that goes to your gauge through the 3rd gen harness. I can't help with a comparison of readings between the 3rd & 4th gen senders, but I've never questioned the reading on my stock 3rd gen gauge.
#5
Re: Using Factory LS1 Oil Pressure Sending Unit for Gauge
Thanks for the fast replies!
I've got the AutoMeter adaptor now but 1/8" pipe is too small for the new sender I bought from the parts store. Evidentially there are two sizes of senders on the original blocks, 1/8 pipe and 1/4?
I've got the AutoMeter adaptor now but 1/8" pipe is too small for the new sender I bought from the parts store. Evidentially there are two sizes of senders on the original blocks, 1/8 pipe and 1/4?
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