4:10's, gear whine, and shaking....

[RIP 112]

Ok, here's the deal. I see a fellow stanger on the highway revving at me. I just had to chase him down. As I got closer to him, things got ugly. We ended up going 135-140mph (honest to God) for over 2 minutes. Well, as I got to 110 it started sounding like a freight train inside my car, and my car was beginning to shake. I kinda thought that it would go away, so I kept on going. When I hit 140 I couldn't even hear the wind, the whine was so loud. I finally let off after he finally let me pass him. We pulled over and talked. I was so nervous that my legs were shaking. Am I f**cking up my rear end? It may be normal, but I have NEVER been over 120, so excuse me for asking....

 

[greenjams]

who ever put your gear in did not do a go job.

 

[RIP 112]

I had my local Ford dealership do it....

 

[PDubs]

who ever put your gear in did not do a go job.

You should have minimal to no whine, no extra vibration over stock. I had 4.10s put in mine with zero issues (but I did get an Al driveshaft installed just in case).

 

[BlackenedSVT]

the shaking is not your gears, its your driveshaft. You need to get your driveshaft balanced. I had this same problem with my car when i would hit 4grand rpm doing over 110, and then it would go away at like 5grand rpm. Just take your driveshaft off and have a shop balance it for you.

If you hear a -whining- sound that is very high-pitched. Then THAT is your gears, and your mechanic did not 'shim' the gears properly and he should shim them again. Hope that helps.

 

[COramprat]

I agree...the vibration is either tires or driveshaft. The gears shouldn't cause a vibration unless they broke...and then the car wouldn't move. These cars are not known to be real stable at high speeds.

 

[BullittStangV8]

check your driveshaft. if you want to be extra sure about your driveshaft, it wouldnt be a bad idea to get an aluminum one from summitracing.com. They seem to have one of the better prices plus shipping.
Mike

 

[RIP 112]

I want an aluminum driveshaft, but I have an automatic and I don't really want to go through the trouble of modifying it. But I kinda figured the shaking was from the tires and sombody told me it may also be the torque converter that's whining. But I still think that there's something not completely right with the gears. Well, if anybody knows where I can get a driveshaft for my auto 4r70w, I'd trulty appreciate it...

 

[mackey]

140 with 4:10 gears? What is the max speed you can get with those?

 

[RIP 112]

I SWEAR TO GOD, I got 145 and STILL did'nt hit the rev limiter, but I was close, real close.....and it was scary.