4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

Breaking gears in .......

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Old 07-21-2005, 01:52 PM
  #11  
DIVER8374
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Default RE: Breaking gears in .......

OOP's I had a brain fart on that one!!!!! [:@] I stand corrected he has the stock 3.27's in it.
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Old 07-21-2005, 02:02 PM
  #12  
94Cbra
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Default RE: Breaking gears in .......

I dont think you have to heat cycle them. I'm sure if you did then Ford Racing, Richmond, or whoever you got them from would say somthing about it, and tell you exactly how to do it. I bought 3.73's for my old 96 GT, never heat cycled them, and drove the hell out of it with no problems for over 40k miles. My current gear setup it doing just fine as well.
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Old 07-21-2005, 06:51 PM
  #13  
idriveamustang
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ORIGINAL: Dave2000GT

I broke my 4.10's in by doing multiple burnouts complete w/power shift to 2nd.

yeah so did i.. this isnt bad is it
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Old 07-21-2005, 07:02 PM
  #14  
JonBeast
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ORIGINAL: PipsBlackStang

Hey 98GT Mustang and pete1665 will you both please record your 70 mph rpm's for me? I have a 96 GT and am not sure if I have stock gears in my car. The guy I bought it from had no idea what had been done to the car, he just purchased it from his newphew who was in need of some cash. If you could please get those #'s for me I would greatly appreciate it.
Dood.....I'm pretty sure your gears are stock. I'm at about 2500 or so at 70.......I remember you saying you were lower than that?

BTW.....Break your gears in.....don't be stupid like ^^^^^^ those guys. The new gears have to mesh and adapt to their surroundings. Just take it easy for a few hundred miles, then you are good to go.
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