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08-29-2011, 05:20 PM
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#1 |
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Registered User
 
Join Date: Oct 2009
Location: Phoenix, AZ
Posts: 475
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Is this an oil pressure port?
Is this plug (center of the picture, with a square head) a port that can be used for an oil pressure sender? It's a 350 small block; the plug is in the top of the block, just behind the water pump.
Thanks, Richard
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1971 C10 Longbed, 350/TH350 |
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08-29-2011, 05:25 PM
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#2 |
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the boat guy
Join Date: Jul 2007
Location: springfield mo
Posts: 2,339
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Re: Is this an oil pressure port?
not for sure, I'd just use the one back by the dist to be safe.
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08-29-2011, 05:28 PM
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#3 |
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Registered User
Join Date: Oct 2006
Location: Oakridge Oregon
Posts: 1,864
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Re: Is this an oil pressure port?
Can be used for one....
It's the cross drilling between the main bearing's oil galley and passenger side lifter's oil supply galley.
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68 CST SWB - Gold/White 50th anniversary /TH350/Buddy Buckets/3.73 Posi/dogdish caps. 68 K10 Burb - Gold/White 327/SM465/NP205/3.73 "Daa Burb" build thread Last edited by Mt Man Chad; 08-29-2011 at 05:46 PM. |
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08-29-2011, 06:51 PM
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#4 |
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Registered User
Join Date: Oct 2009
Location: Phoenix, AZ
Posts: 475
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Re: Is this an oil pressure port?
Thanks. The one by the distributor is already in use for the oil pressure gauge, and I want to use the one above the oil filter for my electric choke wiring if I can get the plug out, but it's in a pretty confined space with the engine in the truck and headers installed. We'll see how it goes.
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1971 C10 Longbed, 350/TH350 |
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08-30-2011, 06:25 PM
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#5 |
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Champagne Taste on Beer Budget
Join Date: Dec 2008
Location: High Ridge, Missouri
Posts: 2,190
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Re: Is this an oil pressure port?
Yes it is.
That is a sure way to ID the block is a 4-bolt main block as well.
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Coming Soon: Project 1970 Country Truck Last edited by C20-67_N_MO; 08-30-2011 at 06:25 PM. Reason: grammer |
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08-30-2011, 07:24 PM
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#6 |
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Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,945
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Re: Is this an oil pressure port?
Mine has the backup oil pressure switch in it for the fuel pump relay. If the fuel pump relay fails this will keep voltage supplied to the pump as long as I have @ least 5PSI of oil.
I shold have wiped it off before I took the picture!   
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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08-30-2011, 10:20 PM
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#7 | |
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Registered User
Join Date: Dec 2008
Location: Pleak, Texas
Posts: 420
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Re: Is this an oil pressure port?
Quote:
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-1967 Chevrolet Fleetside LWB- 350 V8 w/thumpr cam, NV3500, 3.08 gears, A/C, PS -1983 Chevy Silverado C1500- 383 stroker, TH400 -1989 Chevy Silverado K1500 SWB- 5.3L swap, 700R4, 3.42 gears -And a '66 Ford Mustang- 200 I6, C4 trans, rust bucket "The only thing we have to fear is fear itself." -FDR (and maybe rust too)  You've gotta be able to stop and steer before you can go fast! |
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08-30-2011, 10:27 PM
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#8 | |
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Registered User
Join Date: Oct 2006
Location: Oakridge Oregon
Posts: 1,864
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Re: Is this an oil pressure port?
Quote:
Thought it was a true sign of a 4 bolt from previous post. The 1967 C10 I parted with a 283 has one but not a 4 bolt block, wish it was.
__________________
68 CST SWB - Gold/White 50th anniversary /TH350/Buddy Buckets/3.73 Posi/dogdish caps. 68 K10 Burb - Gold/White 327/SM465/NP205/3.73 "Daa Burb" build thread |
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08-30-2011, 10:35 PM
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#9 |
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Registered User
Join Date: Oct 2009
Location: Phoenix, AZ
Posts: 475
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Re: Is this an oil pressure port?
Thanks, guys. As usual I learn something from this forum every day. I have no idea whats underneath the orange paint on my engine, except that it's not original to the truck (no serial number), and it runs a whole lot better that I would expect a stock 350 to run.
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1971 C10 Longbed, 350/TH350 |
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08-30-2011, 11:36 PM
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#10 | |
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Registered User
Join Date: Aug 2011
Location: North Cal and no Sac or Bay area is not NORTH
Posts: 31
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Re: Is this an oil pressure port?
Back in the early 80's when I worked in a machine shop I won and seen many a case of beer lost by those that thought this # or that #, or this indicator could indicate a 4 bolt sb chevy. The only indicator was pulling the pan..
On a big block it was the huge pipe plug above the filter that indicated a 4 bolt but as I understand it later blocks can have the small plug and be 4bm's now days. Quote:
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