Upgraded Transmission/oil lines?

[Mikloangelo]

Has anyone upgraded the transmission and oil lines from the hard rigid quick connect to a braided line with AN fittings? I want to get rid of all the C-clip connections and install AN fittings on the radiator, and oil cooler and then get measurements for the correct hose lengths and then get some made at a local Hydraulic fitting and hoses place. I saw some cheap kits on amazon, but the hose fittings were all the compression style AN fittings which i dont really care for.
Just trying to get the correct fittings and maybe some lengths

 

[99Sierra2500]

I haven't sounds interesting, keep us posted how it goes.

 

[stutaeng]

Not the AN, but I was looking at the Dorman upgraded version. I wound up going with the GM Genuine replacements...

Dorman 62340XD engine oil cooler lines "Improved Design"

I was going to reinstall the engine cooler lines on my 06 Suburban (DIY-rebuilt the engine recently and just installed the block-off plate for the time being.) My lines were starting to get a bit gunked up, but I cleaned them up and think they are reusable. I think I'm going to pass these lines...

www.tahoeyukonforum.com

 

[stutaeng]

Oh, just remembered Lawrence Tolman on one his last few weekly videos custom made some cool hydraulic hoses for his hydroboost system. I can't remember the details and actually didn't even know you can make those yourself.

I'll see if I can find that video later...

 

[Mikloangelo]

Oh, just remembered Lawrence Tolman on one his last few weekly videos custom made some cool hydraulic hoses for his hydroboost system. I can't remember the details and actually didn't even know you can make those yourself.

I'll see if I can find that video later...

I was working on taking out the transmission bolts from the engine and looked at the way the lines are routed for the transmission and oil lines. Looks super easy to do, provided I have the right size fittings for everything. ICT BILLET makes an adapter plate for the oil port on the driver side of the engine. It's more made for those doing turbos but instead of turbos I'm going to the oil cooler on the radiator. Just routing the lines and making sure they don't rub or bind up anywhere will be the hardest part. But I am interested in the video if you have a link

 

[stutaeng]

This is the video I was thinking about. He starts talking about the hydroboost re routed lines around the 13 minute mark.

His next video shows the system completed.

 

[Tonimus]

I've made gobs of AN lines and several hydroboost lines.

Some AN "secrets": Lube every fitting when you assemble it, every time. When you fit the collar to the line before you assemble the fitting, the collars are threaded BACKWARDS. I use a socket in my drill driver to spin the fittings on in reverse. This was a game changer. Even by hand, it is so much easier that fighting them. Aluminum adjustable wrenches are handy. Not all brands use the same sizes.

Hydroboost (PTFE core lines) aren't too difficult. Make your cuts cleanly and go slow. You'll have a much better time.

We currently have AN fittings on a TH350, TH400, and 4L80e. The later 4L80 needs a special fitting in one of them. If you look it up, it's obvious. The 4L60 uses the same fittings as the TH350/TH400.

I like the fittings that use a copper or aluminum crush washer instead of an o-ring. But that's just my thing. It don't think OEM had either.

BIG TIME IMPORTANT NOTE: HAND TIGHT ONLY! IF YOU ARE WORRIED ABOUT LEAKAGE, USE THREAD SEALER!

I snapped a good name-brand fitting off in my transmission two weeks before a race. Thankfully I was able to use a left handed drill bit and a lot of grease to drill it out. DO NOT DUMB LIKE ME.

EDIT: I like Evil Energy's AN kits. I've had good luck with them and they're very high quality for the price.

 

[Mikloangelo]

I've made gobs of AN lines and several hydroboost lines.

Some AN "secrets": Lube every fitting when you assemble it, every time. When you fit the collar to the line before you assemble the fitting, the collars are threaded BACKWARDS. I use a socket in my drill driver to spin the fittings on in reverse. This was a game changer. Even by hand, it is so much easier that fighting them. Aluminum adjustable wrenches are handy. Not all brands use the same sizes.

Hydroboost (PTFE core lines) aren't too difficult. Make your cuts cleanly and go slow. You'll have a much better time.

We currently have AN fittings on a TH350, TH400, and 4L80e. The later 4L80 needs a special fitting in one of them. If you look it up, it's obvious. The 4L60 uses the same fittings as the TH350/TH400.

I like the fittings that use a copper or aluminum crush washer instead of an o-ring. But that's just my thing. It don't think OEM had either.

BIG TIME IMPORTANT NOTE: HAND TIGHT ONLY! IF YOU ARE WORRIED ABOUT LEAKAGE, USE THREAD SEALER!

I snapped a good name-brand fitting off in my transmission two weeks before a race. Thankfully I was able to use a left handed drill bit and a lot of grease to drill it out. DO NOT DUMB LIKE ME.

EDIT: I like Evil Energy's AN kits. I've had good luck with them and they're very high quality for the price.

awesome. Thanks for the input! Looking at what i need to do with the engine and fenders stripped down makes thing simpler. Looks fairly simple to do. Once i put it back together i will report back

 

[AuroraGirl]

I've made gobs of AN lines and several hydroboost lines.

Some AN "secrets": Lube every fitting when you assemble it, every time. When you fit the collar to the line before you assemble the fitting, the collars are threaded BACKWARDS. I use a socket in my drill driver to spin the fittings on in reverse. This was a game changer. Even by hand, it is so much easier that fighting them. Aluminum adjustable wrenches are handy. Not all brands use the same sizes.

Hydroboost (PTFE core lines) aren't too difficult. Make your cuts cleanly and go slow. You'll have a much better time.

We currently have AN fittings on a TH350, TH400, and 4L80e. The later 4L80 needs a special fitting in one of them. If you look it up, it's obvious. The 4L60 uses the same fittings as the TH350/TH400.

I like the fittings that use a copper or aluminum crush washer instead of an o-ring. But that's just my thing. It don't think OEM had either.

BIG TIME IMPORTANT NOTE: HAND TIGHT ONLY! IF YOU ARE WORRIED ABOUT LEAKAGE, USE THREAD SEALER!

I snapped a good name-brand fitting off in my transmission two weeks before a race. Thankfully I was able to use a left handed drill bit and a lot of grease to drill it out. DO NOT DUMB LIKE ME.

EDIT: I like Evil Energy's AN kits. I've had good luck with them and they're very high quality for the price.

2005 and 2006 the cooler line fittings changed in a small important way, the pilot on the line into the fittings on the radiator became longer.

Also at some point the lines changed from threadd into the radiator in the late gmt400 era to the clip retained ones in the gmt800, forgot the year they changed.