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Old 05-17-2008, 09:16 PM
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700R4 Aluminum Pan

I was reading another thread this evening an saw a post about using a filter with truck pan and the filter could fall out. I put an aftermarket aluminum pan I got from Ebay (no filter came with it) and now I'm wondering about the filter that I just replaced when I drained the fluid to find a noise (another post). Do they make a different filter for a truck that I should use with the aluminum pan which is deeper than the pan that came on my transmission?
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Old 05-17-2008, 11:19 PM
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Quote:
Originally Posted by oldcarguy36
I was reading another thread this evening an saw a post about using a filter with truck pan and the filter could fall out. I put an aftermarket aluminum pan I got from Ebay (no filter came with it) and now I'm wondering about the filter that I just replaced when I drained the fluid to find a noise (another post). Do they make a different filter for a truck that I should use with the aluminum pan which is deeper than the pan that came on my transmission?
Thanks

the thread you read may have been about a 4L60E trans? Different filters used from a 700r4 type of trans.

GM changed to a deeper pan design on the truck 4L60E trans in the 90's... some folks install the filter for the shallow pan and this filter can fall out of the pump IF a deep pan is used

Some aluminum pans have raised stubs in the bottom of the pan to support the filter so it does not vibrate out.

Did you measure or check the depth of the filter compared to the pan depth?

Some deep aluminum pans come with a filter extension tube for a deeper pan.

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Old 05-18-2008, 07:41 AM
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My aluminum pan didn't come with any type of extension and doesn't have any kind of studs or supports for the filter. I didn't think about measuring the difference in depth on the two pans, but I went back and tried to compare the two without taking the aluminum pan off the transmission. The best I can tell there's only about 0.5 inch difference between the pans, it that much. So I'm assuming I should be okay with the stock filter.
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Last edited by oldcarguy36; 05-18-2008 at 02:59 PM.
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Old 05-18-2008, 03:07 PM
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Trans Pan & Filter

I'd check with the pan manufacturer and see what they reccomend. It could use an extension tube or different filter. Like Crosley said some have 2 small stands in the bottom of the aluminum pan that keep the stock filter from dropping out. If yours doesn't have any stands it probably uses a filter with a longer neck or an extension tube. Or does your filter have a bracket that mounts to the Valvbody to hold it in place?
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Old 05-18-2008, 03:12 PM
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The deeper factory (truck) pans definitely utilize a different filter, whether it's a 700R or 4L60E, which are basically the same transmission in this respect. If it's deeper than stock, it may very well require a different filter. As stated already, see what the pan manufacturer recommends.
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