4L80e - Trans cooler fittings...seals?
#1
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Hey guys, new to these transmissions and I've got a 4L80e going in my swap vehicle.
I bought some 6an trans cooler adapters and retaining clips from a local stealership. I asked the parts guy if there are any seals/o-rings needed for these fittings. He said no, but I need some verification before I go and throw a bunch of ATF on the ground...
In short, trans cooler fittings for 4L80e, o-rings or seals needed other than retaining clips?
Thanks!
I bought some 6an trans cooler adapters and retaining clips from a local stealership. I asked the parts guy if there are any seals/o-rings needed for these fittings. He said no, but I need some verification before I go and throw a bunch of ATF on the ground...
In short, trans cooler fittings for 4L80e, o-rings or seals needed other than retaining clips?
Thanks!
#2
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What year model 4L80E do you have? If yours is a 1991-1996, all you need are the 1/4" pipe (6) AN fittings and teflon pipe thread sealant.
If yours is 1997-up, you won't be able to use the AN fitting for the rear cooler unless you can find someone who installs the lube extension in the fitting. This fitting intersects through a seal in the center support for the lube circuit.
If yours is 1997-up, you won't be able to use the AN fitting for the rear cooler unless you can find someone who installs the lube extension in the fitting. This fitting intersects through a seal in the center support for the lube circuit.
#3
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not sure what kind of adapters you have, if they replace the orig lines that are held in with "clip" fittings, then they would prob use o-rings-i would like to see a pic-the screw in adapters from the factory are 1/4-18 STRAIGHT fittings with o-rings, dont let someone tell you to use reg npt threaded fittings unless you want to crack your housing
ATI Perf Prods has the AN fittings w/washers that will screw in the trans,
but if you have a rear return fitting, then get a steel fitting and weld it to the
orig adapter
heres a pic of the ATI adapter
ATI Perf Prods has the AN fittings w/washers that will screw in the trans,
but if you have a rear return fitting, then get a steel fitting and weld it to the
orig adapter
heres a pic of the ATI adapter
#4
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Sorry for not being clear. The transmission is a 2004 model. The adapters are from Pure Choice Motorsports.
http://www.purechoicemotorsports.com...cat/cat135.htm
http://www.purechoicemotorsports.com...cat/cat135.htm
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#5
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now that is cool-havent seen those b4-if you look inside the fitting that screws into the trans, there should be an internal o-ring, that will seal your fitting-make sure its there and you should be ok-there should also be a seal on the outside of the fitting where it meets the trans case
i orig welded a steel AN fitting onto the trans fitting, but when i put the hose end on, it hit the floor, so i screwed the trans fitting on, marked where it stopped, then welded a 90 deg fitting on pointed toward the front
gonna order a couple of those, thanks
i orig welded a steel AN fitting onto the trans fitting, but when i put the hose end on, it hit the floor, so i screwed the trans fitting on, marked where it stopped, then welded a 90 deg fitting on pointed toward the front
gonna order a couple of those, thanks
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Yes, the factory fittings are 1/4-18 straight, but NPT works fine unless you crank it down really hard. I am using NPT with no issues, and I know some trans shops (sponsors here) use NPT as well with 0 issues. You actually are more likely to crack the older style case, because the angle of the fittings going downwards gives you less case strength.
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+1 Thanks for the info, a little off topic but my girlfriend just picked up a 2000 3/4 ton silverado with a 6.0 and 4l80e. I just noticed the one transmission cooler line going to the radiator was leaking. So now im in the process of pulling the stock lines and running AN lines w/ an external trans cooler
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I just got off the phone with them and the fitting works for both 4L60E and 4L80E lines. I just ordered two.
Thanks for the tip runpasthefence ! I've been looking for a way to fix my return line on my 4L80E to use the factory fitting that lubes past the internal seal.
Cheers !
Rob (Bad30th)
Thanks for the tip runpasthefence ! I've been looking for a way to fix my return line on my 4L80E to use the factory fitting that lubes past the internal seal.
Cheers !
Rob (Bad30th)