4l80e cooler line fitting question
05-01-2011, 06:24 PM
#1
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4l80e cooler line fitting question me and my friend are doing a 4l80e swap in his car. we have the special fitting for the rear with the tube on the end. i didn't realise the cooler fitting location varried on these transmissions and i hear you dont need the special fitting if the lines enter the trans next to each other toward the front. do you only need this fitting for the ones that's line is near the tailshaft of the trans? and if i don't need the special one, which fittings do i need? i assume the ones that came out of the 4l60e. i'll post a picture of our trans so you can see our line set-up. thanks.
also, we were told this came from an '03 truck.
also, we were told this came from an '03 truck.
Last edited by dutinsss; 05-01-2011 at 06:37 PM.
05-01-2011, 06:29 PM
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On the 97 and later units you are correct you will need a fitting with the extension on it for the rear fitting. The front cooling fitting is the same as what is in the 4l60e. HTH Vince
05-01-2011, 06:41 PM
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we have the fitting(you can see it in the picture sitting on the trans). when we screwed it in, it wouldn't thread all the way in. it would hit someting and actually bent the end a little. we thought the threads were just gummed up with thread sealer but it's definately hitting something.
05-01-2011, 07:01 PM
#4
the trans you have is prob a 96 back, there is a tag on the DS that tells the year-they moved the return line further back after 97 i think, and it uses the long fitting back there-the trans shown uses 2 short ones, both up front
if you switch to AN fittings, get the correct threaded ones, 1/4-18 straight
i hope you didnt damage the threads trying to screw that wrong one in
if you switch to AN fittings, get the correct threaded ones, 1/4-18 straight
i hope you didnt damage the threads trying to screw that wrong one in
05-01-2011, 08:51 PM
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nah, the threads are fine. i found a flashlight and looked into the hole and after the threaded portion, the fluid passage takes a 90 degree right turn so i just put the old 4l60e fittings in both holes. it's hard to believe this is that old of a trans. the junkyard we got it from said it came out of an '03 truck.
05-01-2011, 09:04 PM
#6
nah, the threads are fine. i found a flashlight and looked into the hole and after the threaded portion, the fluid passage takes a 90 degree right turn so i just put the old 4l60e fittings in both holes. it's hard to believe this is that old of a trans. the junkyard we got it from said it came out of an '03 truck.
05-01-2011, 09:55 PM
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well we found out we've been lied to on the year. it has the old style cooler lines and it's missing the 12 o'clock bolt hole on the bell housing. we're going to try to get the junk yard we got it from to swap it for a new style but if we have to use this one what needs to be changed for the earlier style verses the newer style? we have our yoke, wiring harness from speartech, converter, we're using the stock ls1 flexplate, lokar dipstick tube, is there anything different about converthing to an earlier style 4l80e than the later style? thanks.
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05-01-2011, 10:01 PM
#8
From what I understand, the only difference is that the cooler lines are in different places, because the newer ones went to a different lubrication flow path. the newer ones do have a bolt up top as the olders do not. The newer ones have a smaller OD unit in them, Jake likes the older OD units. I bought the older unit. He has built a ton of them out there. The converter setup is the same, If you are using an LS1 flexplate, are you using a spacer, or did you just have your converter built for using an LS1 flexplate?
Last edited by RARON455; 05-01-2011 at 10:13 PM.
05-01-2011, 10:24 PM
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my friend(the owner of the car) called and ordered the converter and i'm pretty sure he ordered it custom to fit the ls1 flexplate. we're using a bmr crossmember with the torque arm mount integrated into it. we're using the stock shifter. we put the 4l60e shifter bracket on it so the cable should just pop right on. as long as the conversion is the same as the newer style, we don't mind that we ended up with the older style, just worried since we ordered everything and expected to get a newer one.
05-02-2011, 07:54 AM
#11
one thing you have to be aware of is GM changed the case plug in, i belive 93, so if the trans is older it might have the wrong plug-as i said, there is a tag on it that tells the year-most older ones have been changed
some co's charge more for 97 up cores, so maybe a bargain point with the junkyard
may have come out of a 03, but not an 03 trans
one thing i have found, some later trans with the return in the center support, are missing the 12 o clock hole, i suspect from the factory for a non GM body????
some co's charge more for 97 up cores, so maybe a bargain point with the junkyard
may have come out of a 03, but not an 03 trans
one thing i have found, some later trans with the return in the center support, are missing the 12 o clock hole, i suspect from the factory for a non GM body????
05-04-2011, 09:51 PM
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i made sure the plug on our adapter harness fit our 4l80e and it does so we should be good. the junkyard finally agreed to try to locate a newer model unit and swap it out but around here, they're scarce. we'll probably just stick to the plan and use this one.
