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Old 06-30-2018, 03:16 PM   #7
69GT
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Join Date: Apr 2016
Location: Fresno CA
Posts: 69
Re: MT82 in a Mach 1 possible?

Quote:
Originally Posted by MAD_MACh1 View Post
You are forgetting the rear gear plays into it as well. With the T-56 you can swap rear gears and get where you want to.

MT82 1st 3.66 * 3.55 stock MACh gear = 12.99
T56 1st 2.97 * 4.30 rear gear = 12.77

or

MT82 5th 1.00 * 3.55 = 3.55 [2.30 overall in 6th]
T56 5th .74 * 4.56 = 3.37 [ 2.28 overall in 6th]

The tighter gear spacing of he T56 will keep you in the power band better than the bigger spacing of the MT82. This is why the 10 speed automatic is so much faster than he manual in the newer cars. The rpm stays in the sweet spot. Depending on your setup you just use the rear gear to tune he operating range.

For me the T56 and 4.10s would the way to go. The 3650's 3.35 with 4.10s is a little much and then I could pop it in 6th and cruise the highway lower than stock rpms.
Yeah. I agree. In the long run it would probably be easier to get a .5 OD T-56 in there than it would to get the MT-82 to work.
This idea came from realizing why the automatic 10-Speed is so much faster than the manual 6-Speed in the 2018 Mustang. It has little to do with how fast the tranny shifts. Has a lot to do with the automatic having a 7 gear spread between 1st and 1:1 ratio in 7th.
In the 18 Mustang it's basically a 4-Speed manual vs a 7-Speed automatic for acceleration purposes. The 7-speed is always at a better spot in the power-band and doesn't swing out of it like the manual does on shifts. The 18 Mustang's manual doesn't have as good a gear spread as the 11-17 because they sacrificed the 1:1 5th gear for another overdrive gear. So basically if you swap a 2011 6M into an 18 6M Mustang it will be faster. So the only reason the 6M 18 is faster than the 6M 17 is the raw power of the Gen 3 Coyote

I know I went waaaay into the weeds on this question. It has more to do with me lamenting the demise of manual transmission R&D and advancements. Modern Manual transmissions are still basically 4-Speeds just like they were in 1969. it's just a matter of how many overdrives they can add. Hell the 7-Speed manual in the Corvette has 3 freakin overdrive gears! It's still a 4-Speed!
The old MT-82 with all its problems but it's 5th gear 1:1 ratio was giving me hope for a 7 or 8 speed manual someday with 6th being 1:1 and 2 OD gears.

I am a dinosaur
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