Transmission WOES! GuRu's needed! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

RaceAGMC · 05-20-2008, 01:20 AM

I just picked up this truck and got it running, now when i start it trans fluid starts pumping out. I had the trans pulled out and replaced the gaskets, and now it's still doing it, what gives? Any help or insight is much abliged.

**leddzepp** · 05-20-2008, 01:29 AM

Where is the fluid coming out of? Did you check your cooler lines going to the radiator?

jayharrell · 05-20-2008, 01:41 AM

agree.. where is it leaking?? what kinda trany??

**WorkinLonghorn** · 05-20-2008, 01:45 AM

You have a crack in the case exactly 1 13/32 " above the governor housing.
No seriously,tell us more and we'll try to help.

Sammy · 05-20-2008, 02:01 AM

In my case after having the 350 rebuilt with a new converter it let loose lots of fluid. After close inspection it was coming out a small hole I believe on the side. Discovered it must be a weep type hole. As I discovered I had over filled by almost a quart. Since no more problems.

RaceAGMC · 05-20-2008, 05:51 AM

I believe its a Th350, the cooler lines are all good. The fluid is coming from the bellhousing area. It's not just a lil fluid, it's like it's being pumped out, when it's overfilled would it do that?

Longhorn Man · 05-20-2008, 06:16 AM

overfilled, or filled improperly... either could do this.
Crawl under, and reach to the top of the tranny. You are looking for a metal tube... a small pipe... see if the fluid was spraying from there.

89 crew · 05-20-2008, 06:21 AM

It would have to be DRASTICALLY over filled to puke. I'm gonna guess you have either a cut , or wrong front seal, or crack in converter neck.

RaceAGMC · 05-20-2008, 07:12 AM

if there is a crack in the neck will i be able to see it with the trans out? and would i just have to put a new converter in?

89 crew · 05-20-2008, 07:18 AM

Clean the neck, and dry it. then fill the converter FULL, let it set for 10-15 minutes. if it gets wet you have a leak.

Sammy · 05-20-2008, 04:27 PM

I would bet it is overfilled. Firedogs 350 done the same thing as mine & his didn't quit but on occasion for a week. Even though it appeared to be done for a few days then another cup on the floor. Needs to get the air out of the system.

RaceAGMC · 05-21-2008, 05:05 AM

So are you sayin just let it run and pump the excess out? Then check it occasionally? I just don't want to burn up the pump or anything.

05-20-2008, 01:20 AM	#1
RaceAGMC Registered User Join Date: Jul 2007 Location: Charlotte, NC Posts: 350	Transmission WOES! GuRu's needed! I just picked up this truck and got it running, now when i start it trans fluid starts pumping out. I had the trans pulled out and replaced the gaskets, and now it's still doing it, what gives? Any help or insight is much abliged.

05-20-2008, 01:29 AM	#2
leddzepp Moderator Join Date: May 2007 Location: Southern Cal Posts: 20,037	Re: Transmission WOES! GuRu's needed! Where is the fluid coming out of? Did you check your cooler lines going to the radiator?

05-20-2008, 01:41 AM	#3
jayharrell Gettin By on Gettin By Join Date: Jan 2008 Location: Cedar Creek, Tx Posts: 1,033	Re: Transmission WOES! GuRu's needed! agree.. where is it leaking?? what kinda trany?? __________________ 69 CST10 LWB 455 Buick 00 S10 2.2 Vin5 76 GL1000 Naked 1bl VW carb "Adios to all the concrete; Gonna get me some dirt road back streets" Last edited by jayharrell; 05-20-2008 at 01:41 AM.

05-20-2008, 01:45 AM	#4
WorkinLonghorn Senior Member Join Date: Dec 2006 Location: Studio City, Calif. Posts: 2,886	Re: Transmission WOES! GuRu's needed! You have a crack in the case exactly 1 13/32 " above the governor housing. No seriously,tell us more and we'll try to help. __________________ '69 GMC C2500 Custom Camper, 8 1/2' bed, New GM 350, NP 435 Close Ratio 4spd. Trans., 3.73 Dana-60 open.Camper and Trailer wiring, PS, PB, AC, tach , three gas tanks, stereo speakers, 2nd owner, Work-Truck supreme.

05-20-2008, 02:01 AM	#5
Sammy Registered User Join Date: Apr 2000 Location: Bonne Terre, Mo Posts: 3,005	Re: Transmission WOES! GuRu's needed! In my case after having the 350 rebuilt with a new converter it let loose lots of fluid. After close inspection it was coming out a small hole I believe on the side. Discovered it must be a weep type hole. As I discovered I had over filled by almost a quart. Since no more problems. __________________ '69 Chevy Long Fleet & '71 GMC Short Step & Project "ODD BALL" "You can wash a pig, soak it in most expensive perfume. In the end it is still just a pig." ODD BALL build thread http://67-72chevytrucks.com/vboard/s...d.php?t=478629"

05-20-2008, 05:51 AM	#6
RaceAGMC Registered User Join Date: Jul 2007 Location: Charlotte, NC Posts: 350	Re: Transmission WOES! GuRu's needed! I believe its a Th350, the cooler lines are all good. The fluid is coming from the bellhousing area. It's not just a lil fluid, it's like it's being pumped out, when it's overfilled would it do that?

05-20-2008, 06:16 AM	#7
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Transmission WOES! GuRu's needed! overfilled, or filled improperly... either could do this. Crawl under, and reach to the top of the tranny. You are looking for a metal tube... a small pipe... see if the fluid was spraying from there. Last edited by Longhorn Man; 05-20-2008 at 06:18 AM.

05-20-2008, 06:21 AM	#8
89 crew Registered User Join Date: Mar 2006 Location: Kansas Posts: 865	Re: Transmission WOES! GuRu's needed! It would have to be DRASTICALLY over filled to puke. I'm gonna guess you have either a cut , or wrong front seal, or crack in converter neck.

05-20-2008, 07:12 AM	#9
RaceAGMC Registered User Join Date: Jul 2007 Location: Charlotte, NC Posts: 350	Re: Transmission WOES! GuRu's needed! if there is a crack in the neck will i be able to see it with the trans out? and would i just have to put a new converter in?

05-20-2008, 07:18 AM	#10
89 crew Registered User Join Date: Mar 2006 Location: Kansas Posts: 865	Re: Transmission WOES! GuRu's needed! Clean the neck, and dry it. then fill the converter FULL, let it set for 10-15 minutes. if it gets wet you have a leak.

05-20-2008, 04:27 PM	#11
Sammy Registered User Join Date: Apr 2000 Location: Bonne Terre, Mo Posts: 3,005	Re: Transmission WOES! GuRu's needed! I would bet it is overfilled. Firedogs 350 done the same thing as mine & his didn't quit but on occasion for a week. Even though it appeared to be done for a few days then another cup on the floor. Needs to get the air out of the system. __________________ '69 Chevy Long Fleet & '71 GMC Short Step & Project "ODD BALL" "You can wash a pig, soak it in most expensive perfume. In the end it is still just a pig." ODD BALL build thread http://67-72chevytrucks.com/vboard/s...d.php?t=478629"

05-21-2008, 05:05 AM	#12
RaceAGMC Registered User Join Date: Jul 2007 Location: Charlotte, NC Posts: 350	Re: Transmission WOES! GuRu's needed! So are you sayin just let it run and pump the excess out? Then check it occasionally? I just don't want to burn up the pump or anything.

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