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Old 04-10-2014, 11:45 AM   #1
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Help with trannsmission!!!!

I am thinking about getting a t45 trans. And putting it in my 03, which currently had a 3650. Will it be a direct swap or is it going to need to be modded some how. If so, what will I need to do?
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Old 04-10-2014, 12:54 PM   #2
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It should be a direct swap for the most part. But why do you want a T45?
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Old 04-10-2014, 12:55 PM   #3
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Just found a super good deal on one.
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Old 04-10-2014, 12:58 PM   #4
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Do you know if there is any downfall on having a t45 vs the 3650
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Old 04-10-2014, 01:33 PM   #5
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They are very similar and a 99-01 T45 is a direct swap minus the shifter. You do not want a 96-98 unit because they use VSS vs OSS for the speed sensor and they also have paper blocker rings vs carbon that the 99-up units got. T45 also uses a different shifter and you have to swap reverse light senders but that is easy.

You can buy a newly rebuilt 3650 with a warranty right now for $1060 shipped to your door from a transmission shop that has been listing them all tax season. Seller is named Mantrans and that is the way I am going with mine. Actually swapping OUT a t45 for a 3650 because it is such a good deal. But I have to use a speedcal to convert the OSS to VSS for mine.

edit: Also your 03 3650 has a .62 overdrive vs the .68 overdrive in a t45 so you will rev a little higher in 5th. Why are you swapping the 3650 anyway? Blown up or not shifting well? If its shifting badly, drain it and fill it back up with 3.2 qts of Pennzoil Synchromesh and see if that helps but it is $8/bottle so only do it if you think it might be the fluid.
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Old 04-10-2014, 01:44 PM   #6
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I am having trouble shifting in 3rd and 4th. It's grinding really bad and I have to jam it into place. I already swapped the fluid and unfortunately it didn't help. My buddy thinks it's the Synchronisers and has a guy who can fix it for like 800 but I found a couple of used trans that are running like 400-500 so I am just thinking about going that route.
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Old 04-10-2014, 01:49 PM   #7
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All I can say for a used trans is it is a crapshoot. You might get one that got treated really well and lasts 100k, you might find that you got sold a blown trans. Only surefire way is to have a trans shop crack it open and look and that is usually a $150-$250 proposition. $800 is about the going rate for a rebuild from a local shop. I can link to that ebay seller when I get home too, like I said for a brand new trans $1060 to your door with no core is about as good as you will ever find.
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Old 04-10-2014, 01:51 PM   #8
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Yeah I wish I had a grand to put down for a brand new trans, unfortunately I don't #brokeguyracecarproblems
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Old 04-10-2014, 01:54 PM   #9
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Well when you filled your current one, did you use the updated Ford TSB fill amount of 3.2 qts or the outdated one in your owner's manual of 3.8? Because 3.8 is too much and causes windage issues and shifting problems. Also if you are using Mercon V that is also not good. You can look up "secret sauce" for a 3650 that ppl swear by and give that a shot or try the Pennzoil like I suggested because not all fluid is created equal and using the wrong fluid or overfilling is one of the biggest causes of 3650 failures out there.
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Old 04-10-2014, 02:30 PM   #10
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I just filled it till it started coming out of the fill hole. It ended up being like 4 1/4 or so. But a good bit of it drained out when I was trying to get the plug back in so it's probably close to what's it's supposed to be.
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Old 04-10-2014, 04:44 PM   #11
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Quote:
Originally Posted by shawn.velez36 View Post
I just filled it till it started coming out of the fill hole. It ended up being like 4 1/4 or so. But a good bit of it drained out when I was trying to get the plug back in so it's probably close to what's it's supposed to be.
No it isn't you over filled it like a mofo. 3.2 is well below the fill hole. This is likely part of your problem. Overfilling these things is really REALLY bad.

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Old 04-10-2014, 05:47 PM   #12
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Help with trannsmission!!!!

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Originally Posted by shawn.velez36 View Post
I just filled it till it started coming out of the fill hole. It ended up being like 4 1/4 or so. But a good bit of it drained out when I was trying to get the plug back in so it's probably close to what's it's supposed to be.

Holy ****.. Drain it and put 3.2qts in it... You almost put a full quart too much lmao no wonder it's acting up. It's very unhappy with its users error lol. Did you research before putting in a type of fluid, and how much you shoulda put in? You might have put in a fluid that's not good for the tremec.

To the original, I personally liked my 150k t5 in my 99 v6 more than my 116k 3650. This one grinds in second (although it has become minimal since I changed my fluid the correct way) and feels worst when I shift. Maybe it might have been abused more. Who knows. The t5 seemed strong and had zero problems at 150k.

Spend 50$ to swap fluid again before dropping 400-1100$ in repairs...
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Old 04-10-2014, 08:10 PM   #13
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Holy ****.. Drain it and put 3.2qts in it... You almost put a full quart too much lmao no wonder it's acting up. It's very unhappy with its users error lol. Did you research before putting in a type of fluid, and how much you shoulda put in? You might have put in a fluid that's not good for the tremec.

To the original, I personally liked my 150k t45 in my 99 v6 more than my 116k 3650. This one grinds in second (although it has become minimal since I changed my fluid the correct way) and feels worst when I shift. Maybe it might have been abused more. Who knows. The t45 seemed strong and had zero problems at 150k.

Spend 50$ to swap fluid again before dropping 400-1100$ in repairs...
V6s have t-5s

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Old 04-10-2014, 08:21 PM   #14
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Help with trannsmission!!!!

Quote:
Originally Posted by scottydsntknow View Post
V6s have t-5s

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Ah. Well I liked it better. Lol.. Do they have better reps?
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Old 04-10-2014, 09:34 PM   #15
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T-5 has a glass jaw and a half but they are the smoothest shifting manuals. And if your 3650 has issues with 2nd that's a common issue with the 3650. Its a badly designed synchro assembly that was updated and any transmissions that are rebuilt should get the newer unit with the TSB done. You can also run syncrhomesh which helps or try "secret sauce". Google it if you want to know what I'm talking about.
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Old 04-12-2014, 09:50 PM   #16
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Will a 3650 from an 07 work on my 03??
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Old 04-12-2014, 11:26 PM   #17
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Will a 3650 from an 07 work on my 03??
No
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Old 04-28-2014, 03:10 PM   #18
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I have a 97 ford GT i can put it in revers but it wont take revers
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Old 04-28-2014, 05:25 PM   #19
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That's also a common problem with the t45. Fix is to pull the trans apart and install an updated fork.

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Old 04-28-2014, 05:27 PM   #20
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It worked fine last night now it don't do thay go out that fast
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Old 04-28-2014, 05:41 PM   #21
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They can. Try getting the car to roll forward just slightly in 1st or 3rd gear, then try putting in 5th twice and straight into reverse. But once the fork goes in that trans its either very hard to get it into reverse, it won't go period or it can actually get stuck IN reverse and then you are royally shafted.
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Old 04-28-2014, 05:42 PM   #22
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It is a automatic trans
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Old 04-28-2014, 05:53 PM   #23
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Well then, check your linkage for any sort of binding. When was the last time you checked or flushed the fluid?
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Old 04-28-2014, 06:10 PM   #24
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I just got the car yesterday
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Old 04-28-2014, 06:30 PM   #25
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That means the owner likely knew about this and did not disclose it. Time to look up your state's lemon laws. Although if you signed a bill of sale that states "as is" I dunno.
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Old 04-28-2014, 06:33 PM   #26
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Do you think if I change the flood and filter that it might fix it
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Old 04-28-2014, 06:58 PM   #27
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Might, might not. I'm sure the previous owner knew about this, like I said I'd be looking up any lemon laws but I'm not sure what you can do for a used car. They are generally as is unless its an emissions related thing.
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Old 04-28-2014, 07:07 PM   #28
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I took it out earlier before the storms hit here and it started working
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Old 04-29-2014, 01:50 AM   #29
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That means the owner likely knew about this and did not disclose it. Time to look up your state's lemon laws. Although if you signed a bill of sale that states "as is" I dunno.

Depends if it's a dealer or not.. I know for sure as-is doesn't cover lemons. I believe you have xx(45?) days to report it or bring it back to the dealer. It may vary state to state also. If you've had it one day, the dealer will have to take that **** back or threaten to sue his *** and report him. I am not sure if it's a individual.
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