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4l60e trans fitting question

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Old Feb 29, 2012 | 08:54 PM
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Default 4l60e trans fitting question

I am wondering if I can change the trans lines fittings to ones frome a 350 turbo and them not leak? thread pitch appears the same as does the thread length.
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Old Feb 29, 2012 | 09:05 PM
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Yes you can. I put 1/4" npt to -6an in my tranny and they don't leak.
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Old Mar 1, 2012 | 06:19 AM
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Thanks for the reply,I was hoping i could put the old fittings in there. Don't care much for the push in and clip setup.
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Old Mar 1, 2012 | 09:23 AM
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The thread on the 4L60E is 1/4" NPS (straight) not NPT, you should use the NPS fitting with a steel/brass gasket (as your stock one is). You can get away with using a NPT, but if over thighten, you can crack your Trans Case.

BC
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Old Mar 1, 2012 | 10:49 AM
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I am going to use these with some braided hose.
http://www.ebay.com/itm/270452549292...#ht_500wt_1054
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Old Mar 1, 2012 | 10:55 AM
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Those will work and have the correct Threads.. AN -8 = 1/2" line...
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Old Mar 2, 2012 | 11:29 AM
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Originally Posted by bczee
The thread on the 4L60E is 1/4" NPS (straight) not NPT, you should use the NPS fitting with a steel/brass gasket (as your stock one is). You can get away with using a NPT, but if over thighten, you can crack your Trans Case.

BC
This is correct! mine came with nylon washers.
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Old Mar 2, 2012 | 12:00 PM
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NOS487.. is there a reason your going with AN -8.. bit of an over kill for most applicaiton unles your racing or something or have a problem of overheading and trying to increase flow and cooling ? Most cars / trucks use 3/8" / AN -6 fitting and lines.. but its not a problem going AN -8.

Just asking as I about to start on my Trans lines soon.

BC
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