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Unread 01-11-2009   #1 (permalink)
oneFASTmustang is offline Made Member

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Default How Reliable is the 4.6?

So as some of you guys know I am replacing the tranny on my 2000 GT as well as a few minor things (water pump) ... the car has 108,000 miles on it.

How reliable and tough are these 2V 4.6L's???
I mean it seems early for my T45 to go out?!? Is the motor going to wimp out to?!?

Im thinking of finishing the tranny rebuild have some fun with it for a little while and sell it for a lower milage fox body. For example on craigslist I saw an clean 86 GT w/ 77,000 miles on it asking $2,000.
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Unread 01-11-2009   #2 (permalink)
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o and another thing is i plan on racing it a few times a month on a couple of 1/8 tracks and i have some fun on freeway on ramps and quick 0- 60 runs every now and then. so if something else is weak my guess is it too will eventually go and possible sooner than i would like.

thanks for any help or opinions!
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-T45RSS Built by John Reggio // Baer 13in. Track Claw // Koni Shocks and Struts// Eibach Sportlines // Ford Racing Upper & Maximum Motorsport Lower Control Arms // Ford Racing '95 Cobra Rs // Toyos // Ram HDX Clutch // Ford Racing 4.10s // CAI & BBK 75mm TB // BBK Catted X-pipe // Hooker Aero Chambers // Custom Tuned using SCT
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Unread 01-11-2009   #3 (permalink)
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I haven't heard of many problems with the 4.6. The T45 is a pretty good tranny also, I'm sorry to see that it failed early on you. . . The 5.0 is freakin bullet proof though.
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Unread 01-11-2009   #4 (permalink)
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1/8 mile? why not just run the full 1/4 mile? i like freeway on ramps too.. i like to hear my car roar... lol
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Unread 01-12-2009   #5 (permalink)
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there is not 1/4 any where near me... trust me i would be running that for sure!
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Unread 01-12-2009   #6 (permalink)
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I think Transmission could be the weakest link in our cars. But your asking about the motor so on that note, I haven't heard much negative about the 4.6 I also think it depends on how well you take care of your car.

I know there are known issues with the TR 3650 and I just think that it again comes down to how well you take care of your car. If you drive it like you stole it and speed shift everytime you engage the next gear, then yea. It will break down sooner than later.

If your replacing your trans have you considered getting something rebuilt that is stronger than stock?
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Unread 01-12-2009   #7 (permalink)
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Quote:
Originally Posted by IhaveadopeGT View Post
I think Transmission could be the weakest link in our cars. But your asking about the motor so on that note, I haven't heard much negative about the 4.6 I also think it depends on how well you take care of your car.

I know there are known issues with the TR 3650 and I just think that it again comes down to how well you take care of your car. If you drive it like you stole it and speed shift everytime you engage the next gear, then yea. It will break down sooner than later.

If your replacing your trans have you considered getting something rebuilt that is stronger than stock?
yea I went with the T45R from Keisler. It was a little more than just a rebuild but from what Ive heard it should be perfect for my application.


if any ones interested in the tranny you can check out this thread
http://www.allfordmustangs.com/forum...ny-update.html

Im good about keeping up on my car too
Ive gotta because of my shop class
Who knows how well it has been taken care of/ driven before me
That my concern though...
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2000 MUSTANG GT
-300hp & 365ftlb Est // Dynoed at 253rwhp 309ftlb
-T45RSS Built by John Reggio // Baer 13in. Track Claw // Koni Shocks and Struts// Eibach Sportlines // Ford Racing Upper & Maximum Motorsport Lower Control Arms // Ford Racing '95 Cobra Rs // Toyos // Ram HDX Clutch // Ford Racing 4.10s // CAI & BBK 75mm TB // BBK Catted X-pipe // Hooker Aero Chambers // Custom Tuned using SCT
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Unread 01-12-2009   #8 (permalink)
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depends on the year engine and how well you take care of it... if you floor it out of every stop sign and light it will kill how long it lasts... when you bought it how many miles was on it?.. its a good engine when treated properly ex: changing oil every 3k mi. and trying to resist smoking the tires off lol...
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Unread 01-12-2009   #9 (permalink)
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The 4.6L SOHC engine, as it stands from the factory, is an extremely stout engine. My Ford tech buddy regularly sees cabs and other fleet vehicles with over 300k on their 4.6s and these fleets aren't even regularly changing oil. (He saw one 200k Crown Vic with the stock air filter!) Yeah, if you don't change the oil for 75k miles you'll get some blowby and you'll be smoking all around town, but they still run.

Even in modified N/A form, its a great platform. How long it will last in heavily modified form depends on the mods, the installer, and the level of upkeep, but if you're concerned about your starting platform, you've got nothing to fear.
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Unread 01-12-2009   #10 (permalink)
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Default Supercharged 2000 GT w/ 106,000 miles

They are very stout engines. The T45 when beat on can start having issues with reverse and other gears. Mine lasted to 85,000 miles with occassional floggings and 6000 rpm burnouts. When I pulled the trans, it was grinding 5th, so I pulled it and put in an 04 Cobra T56.

The engine is very stout. I am running 8-9# of boost from 2500 rpms until redline where it boost peaks at 11#. The engine doesn't smoke and has had the blower on since I installed in at 78,000 miles.
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