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post #1 of 16 Old June 17th, 2008, 10:43 PM Thread Starter
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gear ratio?

whats the factory gear ratio for the rear end on a 2000 GT?

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post #2 of 16 Old June 17th, 2008, 10:45 PM
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If I am not mistake it is a 3.27 ratio


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post #3 of 16 Old June 17th, 2008, 10:50 PM
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If I am not mistake it is a 3.27 ratio


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post #4 of 16 Old June 17th, 2008, 10:52 PM Thread Starter
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all i know is that my mechanic is telling me that the 3.73's in my car are factory....i bought the car a lil over a year ago and now they tell me that 1/4 of the pinion teeth are all chewed up and i have to replace it. just doesn't seem to me that factory spec rear ends are gonna do that, especially after 75,000 it just now decides to jack up? incorrect installation has to be the reason

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post #5 of 16 Old June 17th, 2008, 11:07 PM
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It definatly doesn't have 3.73 stock but if it does now and the pinion gear is messed up it probablly is from incorect install. Have you ever noticed a whine commin from the rear?


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post #6 of 16 Old June 18th, 2008, 09:17 PM Thread Starter
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I have never noticed a whine but there was some slack in the trans that I thought was either a missing tooth or horrible u-joints

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post #7 of 16 Old June 18th, 2008, 09:20 PM
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if your teeth were chewed up you would know it man. trust me..

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post #8 of 16 Old June 18th, 2008, 09:23 PM
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If there was any missing teeth I think it would have already broken by now. What do you mean by "slack" exactly?


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post #9 of 16 Old June 19th, 2008, 05:10 AM
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I was about to say its 3.55 but I was thinking of the newer Mustangs. The 2000 Mustangs came with a 3.37 gear ratio.

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post #10 of 16 Old June 19th, 2008, 10:50 AM
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I was about to say its 3.55 but I was thinking of the newer Mustangs. The 2000 Mustangs came with a 3.37 gear ratio.

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post #11 of 16 Old June 19th, 2008, 02:16 PM
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all i know is that my mechanic is telling me that the 3.73's in my car are factory....i bought the car a lil over a year ago and now they tell me that 1/4 of the pinion teeth are all chewed up and i have to replace it. just doesn't seem to me that factory spec rear ends are gonna do that, especially after 75,000 it just now decides to jack up? incorrect installation has to be the reason
Find another mechanic, the 3.73s are not stock and as HMUSN said if "1/4 of the pinion teeth are all chewed up" you would know it--it would scream like a banshee under load...

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post #12 of 16 Old June 19th, 2008, 02:37 PM
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yea that guy does not know anything

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it was something like the tinman from the wizard of oz pinching off a tight fart...






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post #13 of 16 Old June 19th, 2008, 03:03 PM
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def 3.27, and def take it to another shop....not a dealer please!

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post #14 of 16 Old June 19th, 2008, 03:43 PM
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yeah my rearend had missing teeth on the ring gear and you would know it trust me.
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post #15 of 16 Old June 19th, 2008, 11:49 PM
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2000 GTs come stock with 3.27 gears. After dynoing my car I had a tuner tell me that my speedometer was wrong and that I had 3.73 gears. When I had the car retuned the new tuner said he had to adjust my speedometer because it looked like I had 3.55 gears. I jacked up the car and turned the rear wheels. It looked to me like I had 3.27 gears. As it turns out, I have 3.27 gears. Whoever put in the white face gages put the speedometer needle in the wrong place.

Lift up the rear of your car and put a caulk mark on both the tire and the driveshaft. Turn the tire one complete revolution and count the number of times the driveshaft goes around. If it goes around 3 1/4 turns then you have 3.27 gears.

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post #16 of 16 Old June 20th, 2008, 04:46 AM
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Verifying indicator needle placement is one good use of the HEC diagnostic mode (click here). The digital vehicle and engine speeds displayed in the diagnostic mode are the actual values that the PCM and cluster electronics believe to be true.

The gauges themselves are just servos driven by the cluster electronics, the needles can be pressed on in any position to achieve best accuracy compared to the digital signal.

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