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#26 |
Moderator
![]() Join Date: Jun 2017
Location: Cherryville, NC
Posts: 2,193
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Re: Does the dipstick tube take an O-ring?
These are always tight to install when using a new o'ring....
I usually have good luck by rubbing petroleum jelly on the o"ring with it on the tube, then place the tube in a freezer for a few hours... When installing into the sump, a little more petroleum jelly on the sump boss before installing the tube. Some folk recommend silicon sealer, but I have never needed it if I use a new ring... ![]() ![]() ![]()
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Family and country before all others... 2006 Chevy Silverado (Daily Driver) 2012 Chevy Equinox ![]() ![]() ![]() |
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#27 |
Registered User
Join Date: Jan 2013
Location: Eastern TN
Posts: 1,921
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Re: Does the dipstick tube take an O-ring?
Are you sure that you found an Oring in the sump. A lot of chevys had those plastic Oring looking valves seals from the factory which I have found in the sump a lot. Napa normally has a huge selection of Orings in stock if you ask. Normally I try and buy the ones for AC systems. They tend to do better with oil saturation and are usually a larger gauge that will take up some slop if needed.
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#28 |
Senior Member
![]() Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,237
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Re: Does the dipstick tube take an O-ring?
Interesting. I was planning to check Napa for another O-ring, I pretty well demolished the new one. I'll try the freeze/petro trick.
I found the O-ring on top of the flange inside the oil pan tube, or what AussieinNC calls the boss. It was definitely for the tube.
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Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025 |
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#29 |
Registered User
![]() Join Date: May 2006
Location: Yucaipa, Calif.
Posts: 786
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Re: Does the dipstick tube take an O-ring?
It depends on which engine blocks you're discussing; pre-'86 or post '86. I happen to have two examples of those engines in my garage. On my old 307 the oil tube was a press fit and I remember there was actually a tool to tap the oil dipstick tube into the block. Some people really used to mangle those pounding them into the block with the end of a screwdriver. On the post-'86 350 (one-piece crank seal) the dipstick tube mounts into a boss on the block just above the oil pan. The dipstick tube goes dip into the pan and either a small O-ring or sealer will work; whatever someone finds easier.
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1989 K1500 Chev. EC Original owner; some of the aftermarket parts I've installed are Borla headers, Hypertech chip, Edelbrock water pump, and a Stillen rear disc brake conversion kit. 2009 Hummer H3T 3.7L 5M (sold) 1997 K2500 Chev. EC 7.4L/ 4L80E 2018 Dodge Ram 2500 HD R/C |
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#30 | |
Senior Member
![]() Join Date: Jun 2005
Location: Winona Lake, IN
Posts: 6,281
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Re: Does the dipstick tube take an O-ring?
Quote:
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70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Power windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear |
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#31 |
Registered User
![]() Join Date: May 2006
Location: Yucaipa, Calif.
Posts: 786
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Re: Does the dipstick tube take an O-ring?
I'm reading a discussion that involves both, including pics. Miss that part?
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1989 K1500 Chev. EC Original owner; some of the aftermarket parts I've installed are Borla headers, Hypertech chip, Edelbrock water pump, and a Stillen rear disc brake conversion kit. 2009 Hummer H3T 3.7L 5M (sold) 1997 K2500 Chev. EC 7.4L/ 4L80E 2018 Dodge Ram 2500 HD R/C |
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#32 |
Senior Member
![]() Join Date: Dec 2013
Location: Gods country East,Tn
Posts: 8,545
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Re: Does the dipstick tube take an O-ring?
Run a bead of Permatex #1 around the tube shove it in and forget about it .
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![]() 1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop |
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#33 |
Senior Member
![]() Join Date: Jun 2005
Location: Winona Lake, IN
Posts: 6,281
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Re: Does the dipstick tube take an O-ring?
Must have. My apologies. But the OP was asking about a big block....
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70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Power windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear |
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#34 |
Registered User
Join Date: Feb 2016
Location: Trenton,Ontario & South Carolina
Posts: 755
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Re: Does the dipstick tube take an O-ring?
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#35 |
Senior Member
![]() Join Date: Jan 2007
Location: Turlock, CA
Posts: 8,656
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Re: Does the dipstick tube take an O-ring?
I believe Tony may be trying to get these kind of details as close as possible to factory.
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Please help my sister in law with her battle with cancer https://gofund.me/902f6fce Project "C10 Fever" (68 factory black 396 swb) Project "Little Sister" (70 c10 blue original paint refresh) Project "Blue Bomb" (70 c30 blue original paint refresh) SOLD Project "Vitamin C" (71 c10 orange original paint refresh) SOLD |
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#36 |
Senior Member
![]() Join Date: Dec 2013
Location: Gods country East,Tn
Posts: 8,545
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Re: Does the dipstick tube take an O-ring?
I understand . He's building by the book .That's why it's fun talking to him , I have a book . I sit my coffee on it every day . But if you find the last O ring in the pan maybe there's another way to skin that cat ? and as far as it leaking or seeping oil I'd feel better using the Permatex
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![]() 1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop |
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#37 | ||
Senior Member
![]() Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,237
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Re: Does the dipstick tube take an O-ring?
Quote:
![]() 1. The original 274244 is 0.4375 OD X 0.34375 ID.......It would work too. 2. The NOS 274244 is 0.5078 OD X 0.34375 ID..........That's why the bastard doesn't work. NOS or not, it's the wrong O-ring. Yeah, I'm ignorant enough to have spent $8 on an NOS O-ring. I never bought an O-ring before ![]() 3. NAPA sells part number 727-2011. It's 0.4375 OD and 0.3125 ID for 59 cents and it works. The ID is just a pinch more narrow than original, but it's not much a stretch. The tube slides in easily, though I did lube it up a bit. On a side, NAPA sells 727-2012 for 59 cents as well. It's the same O-ring as the impostor 274244. Quote:
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Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025 Last edited by 71CHEVYSHORTBED402; 12-20-2018 at 12:01 AM. |
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#38 |
Senior Member
![]() Join Date: Dec 2013
Location: Gods country East,Tn
Posts: 8,545
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Re: Does the dipstick tube take an O-ring?
" What's that tube called on the oil pan? "
You must be talking about the FACTORY NOS O RING EATER ? Careful with them they split o rings .and leak all over that freshly painted oil pan ![]()
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![]() 1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop |
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#39 | |
Senior Member
![]() Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,237
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Re: Does the dipstick tube take an O-ring?
Quote:
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__________________
Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025 |
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