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6 speed Transmission on a 4.6?

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Old 11-26-2007, 07:09 PM
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CroDalmatinac
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Default 6 speed Transmission on a 4.6?

Is it possible? I currently have the 4.0 in my car, and I am debating on whether to upgrade to the 4.6 and get a Saleen Supercharger or just the 5.4. I know with the 5.4 their wouldn't be much of a problem but could it bolt up with the 4.6 and be fine? What would I have to change? I already am getting the 8.8 and the GT DriveShaft.
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Old 11-26-2007, 07:15 PM
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07BLACKGT
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Default RE: 6 speed Transmission on a 4.6?

If you're going to go to the trouble of changing the engine.... 5.4!
I don't know how to help you with the transmissin question. [8D]
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Old 11-26-2007, 07:20 PM
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Gene K
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Default RE: 6 speed Transmission on a 4.6?

6 speed will bolt to the 4.6L. It was used on the 2003-2004 Cobra "Terminator" with the SC 4.6L DOHC.

It would make more sense to trade the V-6 for a GT with the 4.6L 3V rather than swap to the same engine and axle.

Your options if you keep the V-6 are Turbo, Magnacharger, or a Centri. VMP Tuning has some dynos on their site of these setups.
If you are determined to swap engines in the V-6 I would go Terminator or 5.4L DOHC from a Navigator. At the very least I would swap a 5.4L 3V from the F150 or Expedition.

I would do a lot of research into fitment, wiring harness, PCM, issues on whichever I decided on.
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Old 11-26-2007, 07:23 PM
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CroDalmatinac
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Default RE: 6 speed Transmission on a 4.6?

I would have loved to do a trade in, however, I decided against it since I've done alot of cosmetic things, and returning everything back to stop (i.e. the duals and whatnot), would be such a pain.
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Old 11-26-2007, 07:24 PM
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sleeper2
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Default RE: 6 speed Transmission on a 4.6?

Cro, for a while I was thinking of putting a 6 speed in my GT. When I called Tremec, they referred me to D and D performance. Here's the website: www.ddperformance.com/ I thought they were very helpful, I'm sure they could answer your questions. Good luck!

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Old 11-26-2007, 08:06 PM
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Bluestar
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Default RE: 6 speed Transmission on a 4.6?

I think it would make more sense to Supercharge your V6, you already did a lot of upgrades ..........and cost wise it'll be a LOT cheaper than what your planning.
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Old 11-26-2007, 08:40 PM
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CroDalmatinac
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Default RE: 6 speed Transmission on a 4.6?

I only did cosmetic work and the exhaust work, which I'm pretty sure would work fine on the 4.6 (not so sure about the 5.4). I did absolutely no engine work and I want to get my car to atleast 450RWHP, so the 4.0 really won't cut it.
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Old 11-27-2007, 05:12 AM
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JRT1
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Default RE: 6 speed Transmission on a 4.6?

What kind of things would need to be done to put a 6-speed in a GT?
Computer program, new wiring, etc?
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Old 11-27-2007, 05:16 AM
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Thurman
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Default RE: 6 speed Transmission on a 4.6?

Just so you know. You are about to spend a lot of MONEY & TIME..
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Old 11-27-2007, 07:24 AM
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zkiller
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Default RE: 6 speed Transmission on a 4.6?

This will cost you thousands more than just trading in for a GT....
Your current mods will be just a fraction of what it would take to convert that car.
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