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#1 |
Senior Member
![]() Join Date: Oct 2001
Location: Lancaster S.C.
Posts: 4,752
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I just had my 350 turbo trans completely rebuilt with shiftkit and Kevlar clutches and red bands also added a 2600 stall,,,
Ok so much for that. Here's the riddle: is there a boot or some weird seal to stop the speedo from leaking tranny fluid??? I've replaces the bullet and the seal/oring and it still leaks. trans guy the rebuilt it says there a special boot/seal that goes between the bullet and cable that stops this leak,,,, True or False,,,,,,, What do yall think, is it BS? thanks Donnie
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#2 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,602
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Re: Is it true or false???
The speedo bullet has two seals. An outer one (an o-ring) that seals the housing to the tranny bore. And an inner one that seals the speedo gear.
If you don't push the inner one all the way in it will still leak. When you but a new bullet, most don't have the inner seal pushed in. The manufacturer expects you to know to do that. Another problem even with the inner seal in proper place is an old speedo gear might have a wear groove in it. |
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#3 |
Registered User
Join Date: Feb 2012
Location: Mission Viejo, CA
Posts: 1,856
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Re: Is it true or false???
my th400 was leaking there after a rebuild so I took it back to the shop and the guy stuck in a new seal in the bullet looking thing and said its a fixer seal that is bigger or something because they are known to leak.
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#4 |
Senior Member
![]() Join Date: Oct 2001
Location: Lancaster S.C.
Posts: 4,752
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Re: Is it true or false???
I guess I need that inner seal or the bigger o ring,, the gear and the bullet is new, s and the trans guy is brain dead to the second seal, any help out there????
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#5 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,602
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Re: Is it true or false???
The new bullet is supposed to come with one. Might just be a worn driven gear.
Check parts stores or gm dealers. |
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#6 |
Registered User
Join Date: Jul 2014
Location: Memphis, TN
Posts: 67
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Re: Is it true or false???
I took mine to an AAMCO rather than jacking with it. .....had them replace front and rear seals, speedo seals and do a diff fluid change. $260.
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#7 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Here is what I found Donnie.
Turbo 350 Speedo Gear Housing LEAK STOP KIT TH350 Transmission Speedometer Oring A new speedo housing leak stop kit for the GM TH350 Transmission, 1969 & up. Includes outer oring and inside metal clad gear seal to stop leaking at your speedometer housing. This kit fits steel bullet type speedo housings for the TH350. Free shipping to any U.S. address. Please see worldwide shipping calculator in this listing. Please read this paragraph: We source our high quality transmission parts from all over the country. I personally quality check each kit or part prior to shipping. We've sold hundreds of transmission kits and parts to many happy Ebay customers. About 40% of our Ebay business is from transmission parts and rebuild kits. But we sell many other items as well !!! Sorry about the picture. ![]() http://www.ebay.com/itm/Turbo-350-Sp...-/300662151823
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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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#8 |
Senior Member
![]() Join Date: Oct 2001
Location: Lancaster S.C.
Posts: 4,752
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Re: Is it true or false???
Thanks Andy, I'll check ebay for that and some other places aswell.
Donnie
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