Replacing 03' trans with 09'
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Mountain Pass
Joined: Nov 2008
Posts: 178
Likes: 25
From: Missouri
Replacing 03' trans with 09'
Hello, I'm replacing my original 03 trans with a used pretty low mile (add said 49k) 09 trans. I put a transgo shift kit in it (except for the snap ring, didn't want to go that far in) and I know that this trans didn't have an external filter (the pump has the extra passage). I've read that I need to either plug the feed hole in my original external filter or eliminate it. Does this sound correct? I was planning on putting an inline magnifine filter on the return. Do you think that would be ok? The harness plugs looks identical. Are there any other differences I should be aware of? All advice and opinions welcome. Thank you.
Hotshot
Joined: Dec 2014
Posts: 17,830
Likes: 3,115
From: Jersey Shore
I envy you.
You'll need a 6.0L converter if you don't already know that. To eliminate the external filter, you could cut the ends off the lines and connect them with hoses, or CNCFab has a blank module that takes the filter's place. It's a pass-through, so there is support for the lines.
I am not sure I would add the inline filter. The in-pan filter was supposed to eliminate that.
You'll need a 6.0L converter if you don't already know that. To eliminate the external filter, you could cut the ends off the lines and connect them with hoses, or CNCFab has a blank module that takes the filter's place. It's a pass-through, so there is support for the lines.
I am not sure I would add the inline filter. The in-pan filter was supposed to eliminate that.
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Mountain Pass
Joined: Nov 2008
Posts: 178
Likes: 25
From: Missouri
Thanks for the replies. Yes it is from a diesel, it is actually stamped "DIESEL" on the inside. It came with a 6 stud converter. I'm putting a remanufactured billet converter in. Some newer vehicles have an external filter, but it is different than the original canister type. I wonder why both lines go through both of these external filters. I can't believe they filter both directions.
Lead Driver
Joined: Jul 2004
Posts: 6,951
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From: Foothills, CA
Thanks for the replies. Yes it is from a diesel, it is actually stamped "DIESEL" on the inside. It came with a 6 stud converter. I'm putting a remanufactured billet converter in. Some newer vehicles have an external filter, but it is different than the original canister type. I wonder why both lines go through both of these external filters. I can't believe they filter both directions.
So is this a trans from a 6.4 or a 6.0 van?
Hotshot
Joined: Dec 2014
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From: Jersey Shore
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Logistics Pro
Joined: Jul 2014
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From: Houston, Texas
It may have come off an Eseries with a 6.0. I don't think you have to bother with eliminating the external filter. You can still use it or just pull the cartridge out and let fluid pass through. I went the other way - put an 06 transmission in my 08 bus. Swapped the pans and had to swap out the rear housing to match up with the different drive shaft lengths on my cab/chassis.
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Mountain Pass
Joined: Nov 2008
Posts: 178
Likes: 25
From: Missouri
Update. I went through the tranny and put all new frictions in it. Except for the low reverse frictions, you have to replace the planetary for them (I guess). It looked very good inside (bushings and such), the reason for doing so was because the fluid I drained from it was brown, it didn't smell burnt or bad but I don't know why it was brown. Anyway it isn't in yet (waiting on parts) so can't report on how it is yet.
Fleet Owner
Joined: Nov 2003
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Update. I went through the tranny and put all new frictions in it. Except for the low reverse frictions, you have to replace the planetary for them (I guess). It looked very good inside (bushings and such), the reason for doing so was because the fluid I drained from it was brown, it didn't smell burnt or bad but I don't know why it was brown. Anyway it isn't in yet (waiting on parts) so can't report on how it is yet.
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Mountain Pass
Joined: Nov 2008
Posts: 178
Likes: 25
From: Missouri
I bought it off ebay. The most of it was drained before I got it, when I pulled the torque converter it was still full with a little in the pan. Supposed to be 49k miles trans, maybe never got changed, I don't know. I want to use mercon lv and didn't want to mix with anything else.
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Mountain Pass
Joined: Nov 2008
Posts: 178
Likes: 25
From: Missouri
I changed fluid on my original trans every 30k, just drain and fill, I always used mercon sp (it got harder to find and more expensive). I put the 08' pan on and did the cold fluid exchange about 6 yrs. ago. I've replaced some of the solenoids a couple times. It has 228k miles on it. never did fail completely but It was not working properly, not like any other time I've had problems with it.
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