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08-31-2016, 07:01 PM
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#1 |
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Registered User
Join Date: Jan 2014
Location: Cowpens S.C.
Posts: 138
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speedo cable leak
My speedo cable is leaking, 350 turbo. Any tips to make it stop?
Thanks, Lynn |
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08-31-2016, 07:18 PM
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#2 |
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Registered User
 
Join Date: Apr 2012
Location: Stillwater, Oklahoma
Posts: 874
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Re: speedo cable leak
I'm assuming your talking about the connection to the transmission? Probably the o ring on the "bullet". Others with more knowledge might have a different opinion.
Mine leaks a bit, and I plan to fix it when I change out the speedo gears to get the correct MPH, so I haven't done that job yet myself.
__________________
1971 C/10 SWB, 15x8 Rallys, 4.5" X 7" static drop, C-notched, 350/350, 3.73 Posi. .........A 383 and Gear Vendors are on my bucket list. 1972 GMC 4X4 K1500 Survivor - Sold No matter what problems life throws at you, your time on Earth can be incredibly fulfilling and rewarding.....if you just lower your expectations. -Phil Dunphy |
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08-31-2016, 07:25 PM
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#3 |
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Senior Member
Join Date: Oct 2009
Location: Godley, TX
Posts: 17,976
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Re: speedo cable leak
That will pretty much always be the cause - i.e. the cable isn't lubricated, per se, only way for oil to get in it is to leak onto it from the trans. Yes, external O-ring, but don't forget to make sure the inner seal is there too. Example pics below. Inner seal missing in right example in 2nd pic.
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08-31-2016, 08:17 PM
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#4 |
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I am a Referee of life.
Join Date: Jun 2000
Location: Greensboro N.C.
Posts: 13,993
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Re: speedo cable leak
Don't let the gear slip out when you remove it. It will fall into the tailhousing and you have to take stuff apart to get it back.
__________________
The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil" |
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09-01-2016, 08:39 AM
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#5 |
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Registered User
Join Date: Jan 2014
Location: Cowpens S.C.
Posts: 138
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Re: speedo cable leak
Let me add, this is a new rebuild, zero feet on it. Never even cranked the engine. All I have done is add fluid.
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09-01-2016, 11:02 AM
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#6 |
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Senior Member
Join Date: Jul 2015
Location: Warrenton VA
Posts: 1,091
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Re: speedo cable leak
Just kind of the nature of the beast. Talked to my builder numerous times about leaks and my brothers th400 has been up to him a few times for other items (full race, manual reverse VB, billet everything etc) but they have told me speedo leaks are SUPER common on 350's & 400's. Like said you can pull the little bullet out and replace the seals and o rings and see if that helps but lots of times the bore gets scored or just worn and they don't seal up real well. A small damp spot around it I wouldn't lose sleep over, but if you are dripping I'd suspect an o ring got rolled, missed, or torn installing it.
__________________
71 c-10 Long Bed, under the knife for a No Limit Engineering Wide Ride Chassis Pack and coil over static drop. 07 Silverado Classic 2wd 95 Camaro 427SBC/TH350 |
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