4r70w - 460 Ford Forum
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post #1 of 4 (permalink) Old 03-25-2019, 04:41 PM Thread Starter
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I have a 460 in a 87 Mustang GT Convertible, C6 and 3.73s. Would it be worth it to go with the 4r70w trans vs the AOD because of the lower 1st and 2nd gears? Or..... should I just keep the C6 and cruise the highway @ 50 MPH?
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post #2 of 4 (permalink) Old 03-26-2019, 08:13 AM
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I have a 4R in a 93 LX,460. I like it but....You have to shell out $1600 for some kind of adapter and a controller before you even start thinking about the transmission.Not going to lie to ya,if you're not real tech savvy,sorting the controller out can be a problem. It's amazing what they can do if you know how. I didn't,finally got mine sorted out with help. I sorta wished I would have gone with AOD.You can make them handle big power but the lock up feature isn't as good, Low 4R gears will work in an AOD but not needed in my case. The C6 is a good tranny but like you,hate the screaming motor at low speed. You will drive the car a lot more with OD.
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post #3 of 4 (permalink) Old 04-29-2019, 12:22 AM
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for a fox body mustang, you dont need a lot of rear gear with the 460. i suggest running a C6 with something like a 3.00-3.25 rear gear.

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post #4 of 4 (permalink) Old 05-02-2019, 06:08 PM
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I use a C6/2.75 axle behind my 557 in an 81 Mercury Zephyr wagon, and a C6/2.88 axle behind my 521 in a 3200 pound Shelby Cobra replica. Both cruise fine and will light the tires at whatever speed you want, even with 200 wear rating tires.

Wells's law of engine size: If it matters what gear it's in, the engine's too small.
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