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Old 06-22-2008, 01:29 PM   #1
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Join Date: Apr 2007
Location: Huntington, NY
Posts: 394
Car: 1983 Pontiac Firebird
Engine: LG4 305ci 4bbl
Transmission: 700r4
Axle/Gears: 10-bolt open diff.

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700r4 front seal?

i have a leak in the front of my trans...i think it's the front pump seal. it's definitely not the pan...just changed the filter and gasket and i can see it's coming from above the pan and dripping down.

does anybody make a front seal that's better than the stock one? any one brand better than the other? anything i can do to prevent future leaks? i've heard that this is somewhat of a problem with the 700r4's.
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1983 Pontiac Firebird
pics

LG4 305ci 4bbl motor, 2.5" Cherry Bomb Extreme muffler- side exit exhaust, Cragar 15x7 Black D Window wheels (4" backspacing), Cooper Cobra Radial GT tires (P235/60R15), 36mm hollow front sway bar with wonder bar, 24mm rear sway bar, Energy Suspension endlinks and Guldstrand bushings, Edelbrock Elite 4222 air cleaner with K&N filter, FF Dynamics 16" Cyclone electric fan, Flex-a-lite Variable Speed Fan Controller, custom fixed headlight conversion with 5000K HIDs and Silverstar Ultra H7 bulbs, Pilot PL-362W driving lights with Hella 100W H3 bulbs, Deka Intimidator 9A78DT AGM battery
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Old 06-22-2008, 03:03 PM   #2
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Join Date: Mar 2003
Location: Florida
Posts: 4,708
Car: 1987 Black IROC-Z (original owner)
Engine: 350 Crate with TPI
Transmission: 700R4 with 2400 SLP Stall

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Re: 700r4 front seal?

No, one seal is the same as the other unless it is a cheap import. My front seal lasted 20yrs so what your opinion of longer seal life??
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Old 06-22-2008, 03:20 PM   #3
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Join Date: Apr 2007
Location: Huntington, NY
Posts: 394
Car: 1983 Pontiac Firebird
Engine: LG4 305ci 4bbl
Transmission: 700r4
Axle/Gears: 10-bolt open diff.

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Re: 700r4 front seal?

well i had my trans rebuilt about 3 or 4 years ago and all the seals were replaced. i just don't want to gave to replace the front seal that often so i was just wondering. also, i know a guy with an 83 T/A with the 700r4 who's had to replace his front seal 3 times already and it still leaks. just wanted to know if there was a fix or a better brand of seal.
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1983 Pontiac Firebird
pics

LG4 305ci 4bbl motor, 2.5" Cherry Bomb Extreme muffler- side exit exhaust, Cragar 15x7 Black D Window wheels (4" backspacing), Cooper Cobra Radial GT tires (P235/60R15), 36mm hollow front sway bar with wonder bar, 24mm rear sway bar, Energy Suspension endlinks and Guldstrand bushings, Edelbrock Elite 4222 air cleaner with K&N filter, FF Dynamics 16" Cyclone electric fan, Flex-a-lite Variable Speed Fan Controller, custom fixed headlight conversion with 5000K HIDs and Silverstar Ultra H7 bulbs, Pilot PL-362W driving lights with Hella 100W H3 bulbs, Deka Intimidator 9A78DT AGM battery
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Old 06-22-2008, 08:08 PM   #4
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Join Date: Aug 2005
Location: louisville, ky
Posts: 1,346
Car: '91rs w/ '87 power train:D
Engine: 355 tpi
Transmission: modified 700r4
Axle/Gears: '01 3.42 10 bolt

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Re: 700r4 front seal?

who rebuilt your trans? was the torque converter replaced at the time? was a new bushing put into the pump. was the pump updated? usually if the front seal is leaking it is a problem with alignment of the torque converter with the pump, the neck of the torque converter, or the pump bushing is worn.
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Old 06-22-2008, 10:31 PM   #5
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Join Date: Apr 2007
Location: Huntington, NY
Posts: 394
Car: 1983 Pontiac Firebird
Engine: LG4 305ci 4bbl
Transmission: 700r4
Axle/Gears: 10-bolt open diff.

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Re: 700r4 front seal?

a local guy did it for me....someone i found out about through a neighbor. as far as i know everything was replaced and all new seals were put in. i think i'll just ask around for good tranny guy in the area and take it there. i just want to get the d@mn thing fixed, otherwise i'll just worry about it. thanks for the input guys!
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1983 Pontiac Firebird
pics

LG4 305ci 4bbl motor, 2.5" Cherry Bomb Extreme muffler- side exit exhaust, Cragar 15x7 Black D Window wheels (4" backspacing), Cooper Cobra Radial GT tires (P235/60R15), 36mm hollow front sway bar with wonder bar, 24mm rear sway bar, Energy Suspension endlinks and Guldstrand bushings, Edelbrock Elite 4222 air cleaner with K&N filter, FF Dynamics 16" Cyclone electric fan, Flex-a-lite Variable Speed Fan Controller, custom fixed headlight conversion with 5000K HIDs and Silverstar Ultra H7 bulbs, Pilot PL-362W driving lights with Hella 100W H3 bulbs, Deka Intimidator 9A78DT AGM battery
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Old 06-22-2008, 10:31 PM
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1983, 700r4, 83, bushing, firebird, front, leak, leaks, pontiac, pump, seal, speed, stall, super, transmission
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