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SN-95 and New Edge Mustangs
T45 vs. T3650
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<blockquote data-quote="pbm.cc" data-source="post: 6590440" data-attributes="member: 20083"><p>probably the gear ratios?!</p><p></p><p>i'll google the specs.....</p><p></p><p>here you go!</p><p></p><p></p><p>General Specifications</p><p><strong>T45 Specs:</strong></p><p><strong>1st gear – 3.37</strong></p><p><strong></strong></p><p><strong>2nd gear – 1.99</strong></p><p><strong></strong></p><p><strong>3rd gear – 1.33</strong></p><p><strong></strong></p><p><strong>4th gear – 1</strong></p><p><strong></strong></p><p><strong>5th gear – .67</strong></p><p><strong></strong></p><p><strong>Reverse – 3.22</strong></p><p> </p><p></p><p>T45 RPM rate with 4.10 gears at 70 MPH in 5th gear: 2519 RPMs</p><p></p><p>T45 RPM rate with 4.30 gears at 70 MPH in 5th gear: 2642 RPMs</p><p></p><p> </p><p></p><p>Known Issues/Problems:</p><p>The T45 doesn’t suffer from many problems. It does have a slight grind when cold usually and has weak shifter forks (helped with an after market shifter) but there aren’t many synchro problems involved like that of the T3650. Recommended fluid for this is any ATF blend of fluid. 3.5 quarts is needed.</p><p></p><p> </p><p></p><p><strong>T3650 Specs:</strong></p><p><strong>1st gear – 3.38</strong></p><p><strong></strong></p><p><strong>2nd gear – 2</strong></p><p><strong></strong></p><p><strong>3rd gear – 1.32</strong></p><p><strong></strong></p><p><strong>4th gear – 1</strong></p><p><strong></strong></p><p><strong>5th gear – .62</strong></p><p><strong></strong></p><p><strong>Reverse – 3.28</strong></p><p></p><p> </p><p></p><p>T3650 RPM rate with 4.10 gears at 70 MPH in 5th gear: 2331 RPMs</p><p></p><p>T3650 RPM rate with 4.30 gears at 70 MPH in 5th gear: 2445 RPMs</p><p></p><p> </p><p></p><p>Known Issues/Problems:</p><p>The T3650 seems to be the most problematic transmission of the SN95 years. It is known to have synchro issues such as grinding even when warmed up. As of 4/22/04, Ford still denies any recall on these transmissions. Recommended fluid for this is GM Synchromesh.. Also, it is recommended to use 3.2 quarts instead of the standard 3.5 quarts as called for in the T45 transmissions. There is now a Ford Service Bulletin that fixes the problems with the T3650.</p><p></p><p> </p><p></p><p></p><p></p><p>Cobra T56 Specs:</p><p>1st gear – 2.97</p><p></p><p>2nd gear – 2.07</p><p></p><p>3rd gear – 1.43</p><p></p><p>4th gear - 1</p><p></p><p>5th gear - .8</p><p></p><p>6th gear - .62</p><p></p><p>Reverse – 3.38</p><p></p><p> </p><p></p><p>T56 RPM rate with 4.30 gears at 70 MPH in 6th gear: 2445 RPMs</p><p></p><p>T56 RPM rate with 4.56 gears at 70 MPH in 6th gear: 2592 RPMs</p><p></p><p> </p><p></p><p>Known Issues/Problems:</p><p>The T56 is the strongest Ford released transmission in the SN95 years. So far, the only problem that has occurred is the fact that Ford decided to use a 10 spline input shaft instead of a 26 spline as found in the Viper/GM T56 transmissions. This results in a weaker transmission compared to the other T56s. Any Dextron III fluid will work in this transmission.</p><p></p><p> </p><p></p><p>4R70W Automatic Transmission Specs:</p><p>1st gear – 2.84</p><p></p><p>2nd gear – 1.56</p><p></p><p>3rd gear – 1</p><p></p><p>4th gear - .7</p><p></p><p>Reverse – 2.32</p><p></p><p> </p><p></p><p>4R70W RPM rate with 4.10 gears at 70 MPH in 4th gear: 2632 RPMs</p><p></p><p>4R70W RPM rate with 4.30 gears at 70 MPH in 4th gear: 2760 RPMs</p><p></p><p> </p><p></p><p>Known Issues/Problems:</p><p>I know of no known issues or problems at this time.</p><p></p><p> </p><p></p><p>* All RPM assumptions are based on if you have a 275/40/17 tire in the rear.</p></blockquote><p></p>
[QUOTE="pbm.cc, post: 6590440, member: 20083"] probably the gear ratios?! i'll google the specs..... here you go! General Specifications [B]T45 Specs: 1st gear – 3.37 2nd gear – 1.99 3rd gear – 1.33 4th gear – 1 5th gear – .67 Reverse – 3.22[/B] T45 RPM rate with 4.10 gears at 70 MPH in 5th gear: 2519 RPMs T45 RPM rate with 4.30 gears at 70 MPH in 5th gear: 2642 RPMs Known Issues/Problems: The T45 doesn’t suffer from many problems. It does have a slight grind when cold usually and has weak shifter forks (helped with an after market shifter) but there aren’t many synchro problems involved like that of the T3650. Recommended fluid for this is any ATF blend of fluid. 3.5 quarts is needed. [B]T3650 Specs: 1st gear – 3.38 2nd gear – 2 3rd gear – 1.32 4th gear – 1 5th gear – .62 Reverse – 3.28[/B] T3650 RPM rate with 4.10 gears at 70 MPH in 5th gear: 2331 RPMs T3650 RPM rate with 4.30 gears at 70 MPH in 5th gear: 2445 RPMs Known Issues/Problems: The T3650 seems to be the most problematic transmission of the SN95 years. It is known to have synchro issues such as grinding even when warmed up. As of 4/22/04, Ford still denies any recall on these transmissions. Recommended fluid for this is GM Synchromesh.. Also, it is recommended to use 3.2 quarts instead of the standard 3.5 quarts as called for in the T45 transmissions. There is now a Ford Service Bulletin that fixes the problems with the T3650. Cobra T56 Specs: 1st gear – 2.97 2nd gear – 2.07 3rd gear – 1.43 4th gear - 1 5th gear - .8 6th gear - .62 Reverse – 3.38 T56 RPM rate with 4.30 gears at 70 MPH in 6th gear: 2445 RPMs T56 RPM rate with 4.56 gears at 70 MPH in 6th gear: 2592 RPMs Known Issues/Problems: The T56 is the strongest Ford released transmission in the SN95 years. So far, the only problem that has occurred is the fact that Ford decided to use a 10 spline input shaft instead of a 26 spline as found in the Viper/GM T56 transmissions. This results in a weaker transmission compared to the other T56s. Any Dextron III fluid will work in this transmission. 4R70W Automatic Transmission Specs: 1st gear – 2.84 2nd gear – 1.56 3rd gear – 1 4th gear - .7 Reverse – 2.32 4R70W RPM rate with 4.10 gears at 70 MPH in 4th gear: 2632 RPMs 4R70W RPM rate with 4.30 gears at 70 MPH in 4th gear: 2760 RPMs Known Issues/Problems: I know of no known issues or problems at this time. * All RPM assumptions are based on if you have a 275/40/17 tire in the rear. [/QUOTE]
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