Rear End Gears
#21
RE: Rear End Gears
I had another hydroplaning incident at about 50 mph over the weekend and resolved to replace the OEM tires as soon as I got near a computer. I ordered the previously mentioned Pirelli PZero Nero M&S in 225/40-18. New tires and the benefit of a higher effective gear ratio and life was good! That is until The Tire Rack called me this morning. It seems that my evil plan was foiled by the load rating of the Pirelli's (an 88 vs. a 99 on the OEM tires). Screwing around with the load rating with a car this big is something that is even outside of my admittedly high risk tolerance. Tire Rack recommended the BF Goodrich G-Force T/A KDWS in 245/55-18. The 55's are the lowest aspect ratio I could go to while retaining the proper load rating. They are also a bit wider. The good news? No more Continentals and no need for the dealer to flash in a new tire size. The bad news? No change in my rear gears. It looks as if a gear swap is in my future after all...
#22
#23
#25
RE: Rear End Gears
You may be right, I just know what the Dodge Service Manager told me when he looked it up (and believe me, he could be wrong). As it stands, I wouldn't even risk the swap from the V6 if it was a perfect fit. I am too worried about them holding up under the torque. I will install something heavy duty once I have all of the specs I need. Do you have a link to specific information about the R/T's rear end?
Nick
Nick
#26
RE: Rear End Gears
Does the Magnum RT have a posi rear end? I didn't think it did, but with the traction control turned off, my car leaves two very nice tire marks. Just like it had posi, two strips about 6 feet long. Maybe it is the extra weight on the back tires, with the battery mounted in the rear.
Car seems to have more torque with the Flowmasters installed, the burnout was done before the muffler install.
Bob
Car seems to have more torque with the Flowmasters installed, the burnout was done before the muffler install.
Bob
#27
#28
RE: Rear End Gears
I don't care what you want to call it. It's either an open differential, a limited slip, dog (locking) clutches, or a closed differential. I know it's not the latter 2.
I'm assuming it has a limited slip. However, I have never seen it mentioned, so I'm not sure. I'm trying to find some info on it right now. I'll let you know what I find.
I'm assuming it has a limited slip. However, I have never seen it mentioned, so I'm not sure. I'm trying to find some info on it right now. I'll let you know what I find.
#29
RE: Rear End Gears
Phantom,
Let me know what you find out. I was at 2 dealers today to find information on a gear swap. While both confirmed that their diagnostic tool could flash in new gears (i.e. the good news), neither could provide useful information about the rear itself. I need all of the specs to find out what I can fit in there. Any leads would be greatly appreciated. As soon as I can find a match, the 2.82's are gone.
Nick
Let me know what you find out. I was at 2 dealers today to find information on a gear swap. While both confirmed that their diagnostic tool could flash in new gears (i.e. the good news), neither could provide useful information about the rear itself. I need all of the specs to find out what I can fit in there. Any leads would be greatly appreciated. As soon as I can find a match, the 2.82's are gone.
Nick
#30
RE: Rear End Gears
It's a Sure-Grip. An open rear is also called the one wheel squeal since only one wheel gets power. If you leave 2 tire marks, it has to be a Sure-Grip. For now, my Road Runner has an open rear, but I'll be putting a Sure-Grip in it soon. My Barracuda had an open rear and only left 1 tire mark when I dumped the clutch. Now, with a Sure-Grip, it leave 2 nice black patches.
Another way to tell when you're in a junkyard is to jack up the rear of the car so both wheels are off the ground. Turn one wheel. If the other wheel easily turns in the opposite direction, you've got an open rear, not a Sure-Grip.
Another way to tell when you're in a junkyard is to jack up the rear of the car so both wheels are off the ground. Turn one wheel. If the other wheel easily turns in the opposite direction, you've got an open rear, not a Sure-Grip.