Why is this tranny leaking - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BIG CHEVY 3600 · 09-20-2008, 07:39 PM

700R4 and brand new never run.
I read on a website it would need 6 qts. to fill. I filled her and later noticed a big puddle underneath. It is dripping fluid out the tailshaft. I hope I just put too much fluid in it.
How many qts. does it take?????
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AB6DO · 09-20-2008, 08:43 PM

The Bowtie Built 700R4 in my 1957 Nomad required 13 quarts to fill. My trans oil pan is a little deeper than factory. My 700R4 had a leak where the dip stick enters the trans body. I replace the leaky Lokar dip stick with a Gotta Show dip stick. Stopped about 95% of the drip.

OrrieG · 09-20-2008, 09:09 PM

Is it dripping at the driveline? If it is "new" but has been sitting for a while the seal could shrink or deform a little. I've had some weep a little until they were ran for a while so they could heat up and seal. If it was just rebuilt it could have gotten damaged during install or when the driveline was installed.

BIG CHEVY 3600 · 09-20-2008, 09:22 PM

If the seal has shrunk it should swell with the fluid soaked in. I'll check it in the AM and see if it is still dripping.

OrrieG · 09-21-2008, 12:55 PM

If you are lucky that is what happened. In the 80" I had a friend that found a 69 Porsche 911 that had been stored for 15 years with only 15K on the clock. He thought it was great to have a "new" car. Ended up tearing the whole thing apart to replace all the rubber, seals, belts, etc. that had dried out in our desert climate.

entourageguy · 09-21-2008, 05:12 PM

Is it in the truck?
Have you got a drive shaft in it?
If its in the truck have you run it to get fluid into the converter.
Maybe the trans is over full because no fluid has moved into the converter.

BIG CHEVY 3600 · 09-21-2008, 05:31 PM

Brian
The driveshaft is new custom made and installed. I have not run the engine as it is a new crate 350 and I have not finished wiring and installing the radiator. I can see the drip is coming from a small hole in the center of the yoke. Can I plug this up and stop the drip.

09-20-2008, 07:39 PM	#1
BIG CHEVY 3600 BIG CHEVY 3600 LONGBOX Join Date: Feb 2008 Location: Dallas, Texas Posts: 382	Why is this tranny leaking 700R4 and brand new never run. I read on a website it would need 6 qts. to fill. I filled her and later noticed a big puddle underneath. It is dripping fluid out the tailshaft. I hope I just put too much fluid in it. How many qts. does it take????? _________________________ __________________ If I were given 8 hours to chop down a large tree, I would spend the first 6 hours sharpening my ax. Abraham Lincoln http://s729.photobucket.com/albums/w...cpZZ3QQtppZZ20

09-20-2008, 08:43 PM	#2
AB6DO Registered User Join Date: Jan 2007 Location: near Fresno, Ca Posts: 31	Re: Why is this tranny leaking The Bowtie Built 700R4 in my 1957 Nomad required 13 quarts to fill. My trans oil pan is a little deeper than factory. My 700R4 had a leak where the dip stick enters the trans body. I replace the leaky Lokar dip stick with a Gotta Show dip stick. Stopped about 95% of the drip.

09-20-2008, 09:09 PM	#3
OrrieG Registered User Join Date: Jun 2006 Location: Idaho Posts: 8,800	Re: Why is this tranny leaking Is it dripping at the driveline? If it is "new" but has been sitting for a while the seal could shrink or deform a little. I've had some weep a little until they were ran for a while so they could heat up and seal. If it was just rebuilt it could have gotten damaged during install or when the driveline was installed. Last edited by OrrieG; 09-20-2008 at 09:10 PM.

09-20-2008, 09:22 PM	#4
BIG CHEVY 3600 BIG CHEVY 3600 LONGBOX Join Date: Feb 2008 Location: Dallas, Texas Posts: 382	Re: Why is this tranny leaking If the seal has shrunk it should swell with the fluid soaked in. I'll check it in the AM and see if it is still dripping. __________________ If I were given 8 hours to chop down a large tree, I would spend the first 6 hours sharpening my ax. Abraham Lincoln http://s729.photobucket.com/albums/w...cpZZ3QQtppZZ20

09-21-2008, 12:55 PM	#5
OrrieG Registered User Join Date: Jun 2006 Location: Idaho Posts: 8,800	Re: Why is this tranny leaking If you are lucky that is what happened. In the 80" I had a friend that found a 69 Porsche 911 that had been stored for 15 years with only 15K on the clock. He thought it was great to have a "new" car. Ended up tearing the whole thing apart to replace all the rubber, seals, belts, etc. that had dried out in our desert climate.

09-21-2008, 05:12 PM	#6
entourageguy Yellow truck club Join Date: Apr 2006 Location: Barrie Ontario Posts: 2,080	Re: Why is this tranny leaking Is it in the truck? Have you got a drive shaft in it? If its in the truck have you run it to get fluid into the converter. Maybe the trans is over full because no fluid has moved into the converter. __________________ ................................................................ Brian ...... My hub garage address http://www.hubgarage.com/mygarage/59apache I gue$$ everything has it'$ price ALL GONE NOW *59 Chev Apache* *PRAISE THE LOWERED* 350 700r lokar shifter power MII front end, shockwaves tilt, 4 wheel discs 4-link and bags 10 bolt limited

09-21-2008, 05:31 PM	#7
BIG CHEVY 3600 BIG CHEVY 3600 LONGBOX Join Date: Feb 2008 Location: Dallas, Texas Posts: 382	Re: Why is this tranny leaking Brian The driveshaft is new custom made and installed. I have not run the engine as it is a new crate 350 and I have not finished wiring and installing the radiator. I can see the drip is coming from a small hole in the center of the yoke. Can I plug this up and stop the drip. __________________ If I were given 8 hours to chop down a large tree, I would spend the first 6 hours sharpening my ax. Abraham Lincoln http://s729.photobucket.com/albums/w...cpZZ3QQtppZZ20



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