C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

After market transmission pan???

 
Old 07-14-2001, 08:20 PM
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IBEAM700
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Anyone out there running an after market transmission pan with a drain plug? When changing the fluid and filter itís a messy job to drain the fluid, plus no matter what I do I canít get a good seal from the tranny pan gasket. Maybe mine is damaged or warped.
Moroso makes one for the 700R4, but my 1990 has the 4L6E. I donít think they are interchangeable.
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Old 07-15-2001, 09:01 AM
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89 Bob L
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Check your pan to see if it is warped. I put my pan on the kitchen counter (my wife was not around and it was cleaned) and checked. I then found some warped areas and used a piece of plywood and a 2x4, to put the pan back into shape.

I then replaced the gasket and put it back on the car. DO NOT use any typ of gasket sealant and DO NOT overtighten the bolts.

As far as a drain is concerned. I would recommend installing one.
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Old 07-15-2001, 10:16 AM
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vettenuts
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I looked into aftermarket pans a couple of years back. Then I crawled under the car. In the convertible, I don't think you can fit in an aftermarket pan due to the "X" frame.

Another consideration. I use the miti-vac with the fluid transfer kit and drain the pan through the dipstick holes prior to removing the pan. Much easier then dropping a full pan. You can get the miti-vac setup at Eastwood.

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Old 07-15-2001, 02:33 PM
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Thanx for the advice. Here is a link to the Moroso Website the pan im thinking about is 42025. It looks like a hefty pan that wouldnít warp, but itís made for the 700R4. Iím not sure if the pans are the same for our 4L60? Anyone?
At 2-3/8 in. deep I think it will clear the X-brace, but ill run down stairs with a tape measure later.

http://www.moroso.com/catalog/catego...?catcode=11201

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Old 07-15-2001, 07:31 PM
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theres a kit you can get to make your own drain plug with the oem pan i think it $15 i think auto zone has it and maybe jcwhitney
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Old 07-15-2001, 08:36 PM
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Gearhead Jo in CO
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Ibeam, I also had troble sealing up trans pan after changing filter and fluid. Tried rubber, cork, the on 4th try, ordered racing gasket from Jegs and its like hard ruber and its reusable and sealed it up like a champ.
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Old 07-16-2001, 11:53 AM
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I saw an ad for a powerglide pan from Stef's and just gave them a call. They advised they should have a 700R4 pan out this winter. I will be 3 inches deep with a drain on the side, fabricated from aluminum. Guy expected price to be in $110 to $140 range. Just for info.

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Old 07-16-2001, 01:53 PM
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Okay, I measured the pan on my car, and it is approximately 2-3/8 inches deep. This means the Moroso pan will clear the convertible X-brace. My only dilemma is the 700R4 identification. I looked thru the Factory service manual, and it refers to the tranny as a
700R4 Ė 4L60E. Iím sure they are the same but if anyone know for sure post it.
Ill contact Moroso today, and see what I can find out.
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Old 07-16-2001, 06:29 PM
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they are the exact same except the 4L60E has an electronic valve body. same parts, casing, pan,converter, etc.
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Old 07-20-2001, 02:19 PM
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I called Moroso, and they told me the 700R4 pan would NOT fit the 4L60E transmission.
Guess ill start looking elsewhere.
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Old 07-20-2001, 02:29 PM
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DON M
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I bought a TCI pan from Jeggs and it wouldn't fit the Convertible. It probably would fit a coupe without the X-brace but the way these cars scrape on speed bumps, do you really want the trans pan to be the lowest point? I would definitely braze in a drain plug while the pan is off. I am thinking about using an outboard filter on my car. It is such a PITA to pull the X-brace off to change the filter.

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