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Old 02-19-2011, 12:50:40 AM   #1
70sbudget
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oil pressure sending unit location????

i have a 87 454 out of a suburban and have looked through three different manuals, on the block and CANNOT find the oil pressure sending unit. i am looking for both the water temp and oil pressure units. the only one i can find is on the drivers side head and i am thinking it is the water temp.

where is the oil pressure sending unit??????
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Old 02-19-2011, 01:12:39 AM   #2
70sbudget
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swerving, thank you. ill pull the new headers to paint and see if thats is the location.

anyone have a pic of a truck block(if they are different)?
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Old 02-19-2011, 01:13:14 AM   #3
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swerving,,,,,is your other sending unit (water) located in the drivers side head?
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Old 02-19-2011, 08:45:30 AM   #4
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I had planned on using the stock oil location for mine(454,oil filter boss)then after installing it,had to remove it because of bellcrank interference.Im now going to be relocating it to the small block location,behind the distributor,above tranny.So,if youre running a stick,make sure thats in there as well for fit up.
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Old 02-19-2011, 10:50:05 AM   #5
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Old 02-19-2011, 11:19:49 AM   #6
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I don't think he will have the upper block location for the oil sender, that location is only on the new blocks was not there on my 454, he may have to use the lower location near filter



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Old 02-19-2011, 01:14:23 PM   #7
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on the 350 theres a spot on the back of the intake right beside the distriburtor that i use for my oil press. gauge
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Old 02-19-2011, 02:53:16 PM   #8
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thanks for the great pics guys!
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Old 02-19-2011, 04:27:02 PM   #9
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Quote:
Originally Posted by swerven
Oil pressure port is just above the oil filter.
This a 2 bolt car block. Might look a little different than a truck motor, but the location of the port is the same.

good news, there is a hole in the block in this exact location. the hole is plugged by a 4 point (square) head as opposed to a hex head. what is the best tool to remove this with? i dont want to strip that puppy!
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Old 02-20-2011, 12:05:36 AM   #10
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Quote:
Originally Posted by 70sbudget
good news, there is a hole in the block in this exact location. the hole is plugged by a 4 point (square) head as opposed to a hex head. what is the best tool to remove this with? i dont want to strip that puppy!

I went to the hardware store and got some square stock that fit the hole, put it in a socket. Worked like a charm. Might be able to use 3/8" ratchet extension as well.
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Old 02-20-2011, 12:54:00 AM   #11
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hmm, well, being that they are male fittings, i think i may buy the tool so i can remove the differenitial fill plug too. thx guys
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Old 02-20-2011, 12:58:46 AM   #12
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depending on the size, you can use a ratchet or breaker bar to remove plugs like this. i removed my diff fill plug with a 1/2 inch drive ratchet with no socket on it.
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Old 02-20-2011, 01:05:38 AM   #13
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If this is a protruding plug and a regular wrench doesn't work. Grab as much of the plug you can with small vice grips, even if the the threads show, grab it if you can. Tap the head of the plug with a hammer and loosen slowly. Attempting this little plug is strip it or going to greater measures..proceed with caution.
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Old 02-20-2011, 03:04:31 PM   #14
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Quote:
Originally Posted by swerven
Oil pressure port is just above the oil filter.
This a 2 bolt car block. Might look a little different than a truck motor, but the location of the port is the same.
Can anyone tell me what the hole is on the left above the frost plug?
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Old 02-21-2011, 01:10:39 AM   #15
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Quote:
Originally Posted by theflash

AWESOME! this hole is open and unpluged. the one over the oil filter is pluged. thus, this is the new location for me. next question. the oil pressure sending unit on MINE is HUGE!!!!!! it will stick out from the block by 2 to 3 inches. what system are you guys using where a hose leaves the hole in the block? does the braided hose plug directly into the back of the gauge???
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