Turbo 350 dipstick o-ring size? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ron350 · 07-08-2019, 07:23 PM

Turbo 350 dipstick o-ring size?

Can any one give me the o-ring size for a Turbo 350 dipstick tube?

Big Blue · 07-09-2019, 09:30 AM

I to would like to know this information.
John

ron350 · 07-09-2019, 11:13 AM

I would be grateful for a brand name part # but I was hoping for a – o ring part number.

For example the o-ring for the small spedo housing is a –115 and I think the modulator o-ring is a –115.

sweetk30 · 07-09-2019, 03:33 PM

if running dip stick tube with o-ring style flare put rtv around it to the case after its installed in the trans . make sure its clean and dry or goo and oils . let cure up good and then fill . there known for leaking even with a good o-ring on them .

Jake Wade · 07-09-2019, 05:14 PM

ATP part # SO33

ron350 · 07-09-2019, 06:34 PM

Thanks Sweetk30 I will seal dipstick tube on the outside of the case like you say.

Thanks Jake Wade I will check out the ATP o-ring.

ron350 · 07-12-2019, 08:23 PM

OK the o-ring for the dipstick tube, modulator valve and the small spedo housing are the same size.
Rockauto sells these under ATP SO33 and Pioneer #76200110.
.
The Parker o-ring book lists these as size –115 which measures 11/16” ID x 7/8” OD x 3/32” diameter or .674” ID x .103” diameter.

GRADYS Performance · 07-18-2019, 03:37 PM

The O-rings for a TH350 transmission are the same for the Vacuum Modulator and the 7/8" speedo sleeve, The Dipstick tube takes a Smaller o-ring than the other 2.

Quote:

Originally Posted by ron350

OK the o-ring for the dipstick tube, modulator valve and the small spedo housing are the same size.
Rockauto sells these under ATP SO33 and Pioneer #76200110.
.
The Parker o-ring book lists these as size –115 which measures 11/16” ID x 7/8” OD x 3/32” diameter or .674” ID x .103” diameter.

ron350 · 07-21-2019, 10:27 AM

Thanks Gradys Performance I was just going by the ATP information.

When I get the dipstick tube out I will list the correct o-ring size.

http://atpautomotive.com/dipstick-tube-oring-seal-so-33

07-08-2019, 07:23 PM	#1
ron350 Registered User Join Date: Apr 2007 Location: Birmingham AL Posts: 266	Turbo 350 dipstick o-ring size? Turbo 350 dipstick o-ring size? Can any one give me the o-ring size for a Turbo 350 dipstick tube? __________________ Stock 75 C10 step side. 350 2 BBL, 350 trans. 150K miles.

07-09-2019, 09:30 AM	#2
Big Blue Registered User Join Date: Feb 2005 Location: Northeast--Bethlehem, Pennslyvania Posts: 642	Re: Turbo 350 dipstick o-ring size? I to would like to know this information. John __________________ Big Blue ( John ) 79 Chevy Pick up.....My Dailey STILL Working on a frame up: 1987 Truck body on a 78 Blazer frame. Need cab blasted to start project. Got the cab BLASTED, Now Prep and Paint. Started to lay SOME BONDO and primer. Done, Ordering paint. Got paint, Stuff painted,Cab,Fenders, Hood more later. 9/7/2015 Got the clear coat on,now time to take one off. Started to put things back (What a nightmare) like the heating and AC stuff,inside wire harness, outside AC unit and booster, still more. May 2016, still working on the inside. Got duck work in,heating and AC. Radio (stock) in dash with after market in console later, Speaker are hooked up, Steering column is in. Getting ready to drop the cab onto the frame, Working on engine now since I have the room. Well here it is 2018, got the engine in and it runs, now I need to get the exhaust system in so I can adjust the lifters, to loud right now. Got the exhaust on now I am waiting for the break parts to come in.

07-09-2019, 11:13 AM	#3
ron350 Registered User Join Date: Apr 2007 Location: Birmingham AL Posts: 266	Re: Turbo 350 dipstick o-ring size? I would be grateful for a brand name part # but I was hoping for a – o ring part number. For example the o-ring for the small spedo housing is a –115 and I think the modulator o-ring is a –115. __________________ Stock 75 C10 step side. 350 2 BBL, 350 trans. 150K miles.

07-09-2019, 03:33 PM	#4
sweetk30 Registered User Join Date: May 2012 Location: horseheads,ny rust belt Posts: 2,794	Re: Turbo 350 dipstick o-ring size? if running dip stick tube with o-ring style flare put rtv around it to the case after its installed in the trans . make sure its clean and dry or goo and oils . let cure up good and then fill . there known for leaking even with a good o-ring on them . __________________ 77-k30lb BIG truck build . 87-k30lb budget beater build . 85-k30lb the plow machine build . 85-c10sb summer fun toy . ----------------------------- HOLLEY SNIPER efi = worst case of p.i.t.a i ever had . EDELBROCK pro flo 4 = best deal going so far . love my setup works great.

07-09-2019, 05:14 PM	#5
Jake Wade Registered User Join Date: Aug 2005 Location: Louisiana Posts: 711	Re: Turbo 350 dipstick o-ring size? ATP part # SO33

07-09-2019, 06:34 PM	#6
ron350 Registered User Join Date: Apr 2007 Location: Birmingham AL Posts: 266	Re: Turbo 350 dipstick o-ring size? Thanks Sweetk30 I will seal dipstick tube on the outside of the case like you say. Thanks Jake Wade I will check out the ATP o-ring. __________________ Stock 75 C10 step side. 350 2 BBL, 350 trans. 150K miles.

07-12-2019, 08:23 PM	#7
ron350 Registered User Join Date: Apr 2007 Location: Birmingham AL Posts: 266	Re: Turbo 350 dipstick o-ring size? OK the o-ring for the dipstick tube, modulator valve and the small spedo housing are the same size. Rockauto sells these under ATP SO33 and Pioneer #76200110. . The Parker o-ring book lists these as size –115 which measures 11/16” ID x 7/8” OD x 3/32” diameter or .674” ID x .103” diameter. __________________ Stock 75 C10 step side. 350 2 BBL, 350 trans. 150K miles.

07-21-2019, 10:27 AM	#9
ron350 Registered User Join Date: Apr 2007 Location: Birmingham AL Posts: 266	Re: Turbo 350 dipstick o-ring size? Thanks Gradys Performance I was just going by the ATP information. When I get the dipstick tube out I will list the correct o-ring size. http://atpautomotive.com/dipstick-tube-oring-seal-so-33 __________________ Stock 75 C10 step side. 350 2 BBL, 350 trans. 150K miles.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.