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Old 08-10-2008, 05:34 PM   #1
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Re: Tremec TR-3650 Transmission Gear Ratios

it was in the middle of the 2001 model production.. a friend of mine has an 01 with a 3650 in it.
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Old 08-10-2008, 05:42 PM   #2
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Re: Tremec TR-3650 Transmission Gear Ratios

Thanks for the correction
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Old 08-11-2008, 07:21 AM   #3
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Re: Tremec TR-3650 Transmission Gear Ratios

I think some used the 3650-HD such as the cobras in 01 (not sure if all but some perhaps) and maybe the bullit. hmmm need to do some research.
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Old 08-11-2008, 08:46 AM   #4
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Re: Tremec TR-3650 Transmission Gear Ratios

i thought the 3650 was in the 99 cobra too?? im not sure
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Old 08-11-2008, 08:52 AM   #5
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Re: Tremec TR-3650 Transmission Gear Ratios

The 99 cobra had the t-45.
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Old 08-11-2008, 09:14 AM   #6
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Re: Tremec TR-3650 Transmission Gear Ratios

ok, i wasn't sure
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Old 01-16-2009, 02:16 PM   #7
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Re: Tremec TR-3650 Transmission Gear Ratios

how do we now wat tranny we got if we have an 01
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Old 01-16-2009, 03:31 PM   #8
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Re: Tremec TR-3650 Transmission Gear Ratios

It would be based off of the month the car was manufactured. If it is 6/01 and before it is a T-45 if it is after 6/01 it is a TR3650. The sticker on the inside of the drivers door will give you the date. At least thats one way to check.
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Old 01-18-2009, 12:30 PM   #9
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Re: Tremec TR-3650 Transmission Gear Ratios

thnx mine was made nov of 00 so i guess i got the T-45
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Old 01-18-2009, 12:32 PM   #10
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Re: Tremec TR-3650 Transmission Gear Ratios

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Originally Posted by bobbyoooo View Post
thnx mine was made nov of 00 so i guess i got the T-45
not if you have the auto
t45 vs. t3650 are manual trannies
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Old 01-18-2009, 02:39 PM   #11
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Re: Tremec TR-3650 Transmission Gear Ratios

F autos... to bad this one had a selling price i just couldn't resist
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Old 01-18-2009, 02:59 PM   #12
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Re: Tremec TR-3650 Transmission Gear Ratios

4R70W is what you have
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Old 01-19-2009, 01:22 PM   #13
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Re: Tremec TR-3650 Transmission Gear Ratios

Quote:
Originally Posted by Brent View Post
The Tremec TR-3650 made it's debut in the 2001 Mustang GT during mid production. Before the switch to the TR-3650 the rest of the 2001 Mustang GT's used the T-45. The TR-3650 is still used in the 2005+ Mustang GT's.

1st Gear: 3.38:1
2nd Gear: 2.00:1
3rd Gear: 1.32:1
4th Gear: 1.00:1
5th Gear: 0.675:1
Reverse: 3.38:1
will this mate up to a 1998 cobra rear end, the gearing is different for the cobra right?
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Old 01-19-2009, 01:29 PM   #14
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Re: Tremec TR-3650 Transmission Gear Ratios

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Originally Posted by Cobra Verde View Post
will this mate up to a 1998 cobra rear end, the gearing is different for the cobra right?
The driveshaft will be the same, just get a driveshaft from any fox bodied car running this transmission.

Be more worried about the bell housing mating up to a V6, this is where you will run into issues.
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Old 01-19-2009, 03:00 PM   #15
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Re: Tremec TR-3650 Transmission Gear Ratios

How about the speedo in the 98 cobra, is the drive on the transmission for digital or cable read out. If not what is the newest transmission i could use and still utilize my speedometer?
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Old 02-08-2012, 09:37 AM   #16
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Re: Tremec TR-3650 Transmission Gear Ratios

hey guys... i'm glad you brought it up. i just joined today, and last week flushed(drained and filled) my tranny. posted earlier regarding my sticking shift situation.

anyway, is it true that my (04 gt) is the tremec 3650, as the drain plug is located flush on bottom (steeda's short shift app guide gave the indication). otherwise, was wondering how i can tell for sure?

thx-

joe
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Old 02-21-2012, 05:04 PM   #17
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yea joe you have the tr3650, same as me I have an 03 gt. You can go on americanmuscle.com and read up it explains it better than I can
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Old 02-21-2012, 09:47 PM   #18
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Re: Tremec TR-3650 Transmission Gear Ratios

yeah, thanks... figured i out already. gonna do another drain and fill w/mobil1 (which is what they recommend) and order my tri-ax or pro5.0
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Old 02-23-2012, 12:50 PM   #19
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Re: Tremec TR-3650 Transmission Gear Ratios

I just ordered an MGW tr3650 short throw last week. Cant wait till it arrives!!
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Old 02-23-2012, 01:38 PM   #20
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Re: Tremec TR-3650 Transmission Gear Ratios

awesome... mine should be here tomorrow! will let you know how the install goes and how i like it. btw, how much was the mgw unit???
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Old 02-23-2012, 02:23 PM   #21
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Quote:
Originally Posted by imhooked
awesome... mine should be here tomorrow! will let you know how the install goes and how i like it. btw, how much was the mgw unit???
I got it plus a sweet gt knob for about 230
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Old 02-23-2012, 02:39 PM   #22
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Re: Tremec TR-3650 Transmission Gear Ratios

that sounds pretty good! did you buy on line, or from mgw direct(i heard that's the only way?!)
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Old 02-23-2012, 03:09 PM   #23
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Quote:
Originally Posted by imhooked
that sounds pretty good! did you buy on line, or from mgw direct(i heard that's the only way?!)
Website I went to is www.mgwltd.com
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Old 06-15-2012, 11:15 PM   #24
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Re: Tremec TR-3650 Transmission Gear Ratios

Quote:
Originally Posted by GTdevildriver View Post
I just ordered an MGW tr3650 short throw last week. Cant wait till it arrives!!
That is a great shifter, I have one myself and I love it!
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Old 06-16-2012, 01:16 AM   #25
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Quote:
Originally Posted by Cobraman8801

That is a great shifter, I have one myself and I love it!
It is. I love it.
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Old 09-13-2012, 09:08 PM   #26
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Re: Tremec TR-3650 Transmission Gear Ratios

Quote:
Originally Posted by lowflyn View Post
The driveshaft will be the same, just get a driveshaft from any fox bodied car running this transmission.

Be more worried about the bell housing mating up to a V6, this is where you will run into issues.
The Driveshaft from the Foxbody will work if you change yokes. A foxbody drive shaft has a T5 has a 28spline output and the 3650 has a 31spline. The 3650 will bolt to any 4.6L

---------- Post added at 10:08 PM ---------- Previous post was at 10:05 PM ----------

Quote:
Originally Posted by SpectorV View Post
I think some used the 3650-HD such as the cobras in 01 (not sure if all but some perhaps) and maybe the bullit. hmmm need to do some research.
Nope the same 3650 is used. The 03-04 Mach has a .62 final gear for the 3.55's. where as the other's used in 01-04 GT's/Cobra came with .67 for the 3.27's. Also the 3650 is rated for 360ft lbs.

(I Realize this is old)
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Old 10-10-2012, 08:32 PM   #27
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Only the earliest 3650s used in the New-Edge Mustangs had the 0.675:1 (0.68:1) 5th gear ratio. In September 2001 a change was made to the the TR3650-3 with a 0.62:1 5th gear. After that all 3650s in Mustangs had the 0.62:1 high gear.

This is from a 2007 Transmission Digest article [highlights added]:
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Old 10-11-2012, 03:11 AM   #28
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Quote:
Originally Posted by cliffyk
Only the earliest 3650s used in the New-Edge Mustangs had the 0.675:1 (0.68:1) 5th gear ratio. In September 2001 a change was made to the the TR3650-3 with a 0.62:1 5th gear. After that all 3650s in Mustangs had the 0.62:1 high gear.

This is from a 2007 Transmission Digest article :
Info above is direct from tremec themselves and can be confirmed by running the ford service part #'s as well as early 01 where T45's and not 3650. IE 01 cobras where T45 and not 3650. Model change for 2002 during 2001 year were 3650's for GT.
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Old 10-11-2012, 03:15 AM   #29
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help me!!!

I have a 03 roush stage 2. I want to supercharged it but some people say I need to get a 03 cobra block. Can someone help me? I want my car to push around 500 or 400 HP!
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Old 10-11-2012, 03:20 AM   #30
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Quote:
Originally Posted by roush1993
I have a 03 roush stage 2. I want to supercharged it but some people say I need to get a 03 cobra block. Can someone help me? I want my car to push around 500 or 400 HP!
The SC version of the roush is a stock 2v. 400 to 450 is about the limit of the reliability of the internals. But you can just get a forged rotating assembly to up reliability. Otherwise the stock 2v can handle your needs. Majority of mod motor failures stem from tunes.
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Old 10-12-2012, 11:27 AM   #31
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Quote:
Originally Posted by cliffyk View Post
Only the earliest 3650s used in the New-Edge Mustangs had the 0.675:1 (0.68:1) 5th gear ratio. In September 2001 a change was made to the the TR3650-3 with a 0.62:1 5th gear. After that all 3650s in Mustangs had the 0.62:1 high gear.
I thought the 0.62:1 5th was special to the 03-04 Mach 1's (for MPG's) because they have a 3.55 gear.
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Old 10-12-2012, 12:27 PM   #32
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Quote:
Originally Posted by Azure

I thought the 0.62:1 5th was special to the 03-04 Mach 1's (for MPG's) because they have a 3.55 gear.
That is correct I was referring to the gt's
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Old 11-16-2012, 10:26 AM   #33
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What manual transmission would be best in a 2001 GT built for pro touring and auto cross? Ive looked into the T-45 & TR-3650 but i dont know what one is better or my years at all. Also since it is a pro touring car would a 6 speep double over drive be better for the distance for gas milage?
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Old 06-27-2013, 02:13 PM   #34
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I love that quote!
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