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Discussing *T3650 Parts and Info in the 99-04 Forum. Here is something I typed up for another forum that I thought you all might ... Modded Mustangs is the premier Ford Mustang Forum on the internet. We discuss all aspects of the Ford Mustang on the forum. Registered Users do not see the above ads. Please Register - It's Free! |
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December 24th, 2007, 02:31 PM
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#1 |
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Newbie
2003 Mustang GT
Join Date: Dec 2007
Location: Kentucky
Posts: 38
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*T3650 Parts and InfoI know that some of you as well as myself have been looking for parts for the Tremec 3650. Most places you call like to sell you an entire "rebuild kit" which can range from $700 - well over a $1000 if bearings are included. Since most of us probably only need parts related to our 2nd gear abuse I found this place which I think will be very helpful. Call Auto Gear, they are located in NY. 1-800-634-3001 Auto Gear Equipment - Automobile and Industrial Gearsets and Transmissions They have a "2nd gear fix" kit.. The kit includes: 1st & 2nd gear slider 1st & 2nd gear synchronizers/blocking rings the actual 2nd speed gear The price for the entire kit is a little less than $360 .. much cheaper than the $700 everyone else wants. The difference is that with auto gear, you just get 1st and 2nd synchros, where everyone else wants to sell the entire synchronizer/bearing kit, a 2nd gear assembly, and a slider kit.. This 2nd gear fix kit basically includes the parts you need to fix your 3650 if it is grinding going into 2nd or jumping out of 2nd gear. Other problems will require other parts, but the 2nd gear grind is the most common problem with a 3650. In my particular case.. the plastic piece on the end of each side of the 2nd gear shift fork some how got jarred off. The shift for was pushing against the 2nd gear slider with only one side putting it in a bind. This eventually caused severe wear on the synchronizer as well as the tiny teeth on 2nd gear itself. here is a picture..sorry for the quality (took with a motorola razr)  There was also an article in this magazine about the 3650:  It says stuff like: "The factory rates the 3650 at 360 lb. -ft of toruqe, which is extremely conservative. I race against mustangs which are easily putting out 500-600 lb ft of torque with no ill effects on the transmission. Present day america is ruled by lawyers and most of the factories tend to be very conservative on torque ratiings to prevent unnecessary litigation." It goes on to say.. "On 2001-04 models of the 3650 the oil fill specs was 3.8 liters of dexron III ATF. The unit was validated using mobil one synthetic transmission fluid but was changed to dexronIII for a slightly lower viscosity and improved cold shifting performance. these units has a problem with a "nibble" on the 1-2 shift, After much study and research it was found that the oil level was too high in the uni. This caused windage problems with the excess lube causing the gears to over-synchronize. this is because when the gear train is submerged in too much oil the transmission fluid overheats and foams and affects the turning ratio of the gear train similar to your trying to run on the beach in 2 feet of water. The increased resistance to turning slows the gears prematurely and alters the synchronizer timing, causing shift problems. The oil level was reduced to 3 liters and the problem was resolved." Some other facts I didn't know was that there are 10 different tremec 3650's
SOOO .. the idea is to put only 3 liters not 3.8 of straight up cheapass automatic transmission fluid dexron III. This lets the syncrhonizers spin easier which cuts down the grind going into gears which will lead to longer life out of your transmission. Oiling WILL NOT be an issue by lowering the level of fluid. Both shafts are in fluid, the lower shaft being completely submerged. The lower shaft will also constantly sling fluid around inside the case oiling every gear all the time... BUTT If its too late, don't buy an entire rebuild kit for $1000+ if you only need 2nd gear parts.. Call Auto Gear, and ask to speak to George. He will set you up right with all the parts you need to fix a 2nd gear grind for less than $360. The Transmissions are simple to work on, more so than a T5 or T45 so labor shouldn't be very much. Labor should not be over $200 and normally is around $100 in my area. (considering you take the transmission out yourself) This could add $100 or more to the cost (around $150 in my area to pull transmission) If you live in a bigger city, expect a much higher labor charge.. IF your transmission is so far gone that you are going to have to spend well oever a $1000 I would suggest looking into a TKO500. The removable bellhousing alone makes it dam near worth the price.
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 P1SC, 3 core, bolt ons 395/435 |
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June 17th, 2008, 05:06 AM
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#2 |
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Newbie
2002 Mustang GT
Join Date: Jun 2008
Location: Luray, VA
Posts: 5
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June 17th, 2008, 09:14 AM
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#3 |
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MM's nicest mod, :)
Join Date: Aug 2005
Location: elkridge, MD
Posts: 2,850
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Have a Nice Day, Especially MSO  99 Mustang GT VT 302 Stroker 11.13@123 f.s. 9k 06 Dodge MegaCab Diesel 455rwhp/815rwtq |
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