Th350 owners I need a favor

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Ricko1966

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Location
kansas
First Name
Rick
Truck Year
1975
Truck Model
c20
Engine Size
350
I've got an issue I'm trying to figure out with my th350 and need some help.Could one of you please check your fluid level before starting cold not running, start it put it in drive turn it off and check the level not running again. Thanks busy gotta go will explain more latter. Thanks
 

GXPWeasel

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Greg
Truck Year
1982 | 2015
Truck Model
Sierra C15 | Silverado Z71
Engine Size
5.0 | 5.3
I've got the TH350, but it's not in the truck right now, so I can't help unfortunately. Curious as to what your issue is though...

what part of KS you from?
 

Ricko1966

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Rick
Truck Year
1975
Truck Model
c20
Engine Size
350
I'm. In Linn County near Lacygne.You? Transmission,Dipstick, Dipstick tube the whole mess is a previous owner mismatch of chrome stuff O.E. stuff etc. So whether it's accurate? Who knows.Checked bone yards for months for an O.E. tune and stick, no luck.If I let it sit too long it will not move unless I add transmission fluid. I've replaced the pan gasket, tailshaft seal and Speedo drive orings, the torque converter seal.Now I'm going to drop the pan again while it's not moving to check the level and check the filter/filter gasket. Trying to determine if it only works when it's overfull as in filter/filter gasket , so trying to determine if the pan is ever fuller than the pan gasket sealing area.
 

Poppy 87

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305
Richard, when you have the pan off seat the dipstick fully into the filler tube and scribe a mark on dipstick even with the edge of the transmission case where the pan is mounted. This method will give you the full "warm/hot" level when operating. Tried and true method, good luck
 

AuroraGirl

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Northern Wisconsin
First Name
Taylor
Truck Year
1978, 1980
Truck Model
K10, K25
Engine Size
400(?), 350
i have a th350 and it most likely came from a square but not 100% and can show you a dipstick length,... x2... i have one for sure in a 78. i also have BOP th350 but car
 

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