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#1 |
Registered User
Join Date: Jun 2001
Location: Oklahoma City Oklahoma
Posts: 173
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Transmission leak
I have a TH350. When the fluid is on the full mark tranny leaks. When it gets to the add 1pt mark it stops leaking & stays at this mark. can anyone tell me where this thing is leaking. Thanks
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1971 Chevy SWB Oklahoma City, Oklahoma |
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#2 |
CCRider
Join Date: Feb 2000
Location: Olive Branch,MS,USA
Posts: 2,232
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Sounds like mine. I have yet to have time to fix mine, but I am almost 100% sure it is leaking thru the pan gasket. What I mean by that is I think it is actually seeping thru the gasket materal rather than leaking because the gasket is bad or installed incorrectly. I think a lot of gaskets they sell now days are crap. Mine really only leaks if the truck is parked the least bit off level. Park it perfectly level and it won't leak a drop. Anybody know a good brand of trans pan gasket?
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72 GMC Sierra SWB almost finished---- 84 Softail Olive Branch MS |
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#3 |
Registered User
Join Date: Jul 2002
Location: California central coast
Posts: 126
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That sounds more like a leak through a seal or plug, that isn't immersed in ATF unless you park on a hill.
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#4 |
1969 Custom 30 wrecker
Join Date: Sep 2001
Location: Pottsville, Pa
Posts: 2,611
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$10 dollars says it's the O-ring on the dipstick tube.
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Bob 63 Impala 283/PG/3.36 (under restoration) 66 Impala 327/PG/3.36 66 Chevelle SS 409/M22/3.55 69 Chevelle 307/PG/3.08 (future restoration) 69 C10 short stepside 454/TH350/3.73 69 Custom 30 tow truck 350/4 spd/4.10 (resto done, CRUISIN TIME!) 71 Cheyenne 20 fleetside 350/4 spd/4.10 71 Chevelle 6/PG/3.08 72 Chevelle 454/M21/4.10 |
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#5 |
Registered User
![]() Join Date: Aug 2001
Location: SOMERSET KY.
Posts: 6,427
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junkyardjohn 69 1 TON TOW TRUCK // 84 4WD CUCV BLAZER// 85 1 TON 4WD STAKE TRUCK// 86 M1031 5/4 TON 4WD CUCV// ALOT OF OLD TRUCKS FOR ONE OLD MAN TO DRIVE. ![]() LIFE MEMBER OF P.E.T.A (PEOPLE EATING TASTY ANIMALS) DON'T RENT U-HAUL ALWAYS TELL THE TRUTH IT WILL AMAZE PART OF THE PEOPLE & ASTONISH THE REST |
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#6 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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I agree, o ring, maybe rear seal at the drive shaft. That is another popular one.
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