Gears 3.90
07-07-2006, 01:42 PM
#1
2nd Gear Member
Thread Starter
Join Date: Jun 2006
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Posts: 256
Gears 3.90
Why does everyone talk about 3.73 or 4.10 and not the 3.90? Why do people not use the 3.90? Seems like a mixed bag on the other 2 and these are right in the middle and you would think they would make more people happy.
07-07-2006, 02:03 PM
#3
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Join Date: Feb 2005
Location: Texas
Posts: 3,225
RE: Gears 3.90
People don't talk much about the 3.90s because Ford does not make a 3.90 gearset for the 8.8" rear end. Motive makes 3.90s for the 8.8 but they are noisey as hell. You can get them micronite coated for an additional $200 and it helps, but they are still not as quiet as Ford gears.
07-07-2006, 05:47 PM
#5
3rd Gear Member
Join Date: Mar 2005
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Posts: 516
RE: Gears 3.90
Also, dont forget you have to recalibrate your speedometer after the gear change. If you have a CAI by Diablosport or SCT for example, you have a choice of 3:55, 3:73, or 4:10. Your fornicated if you have 3:90s. Im sure there is a way to do it, but I dont know of one offhand. [:-]
07-07-2006, 08:33 PM
#7
RE: Gears 3.90
ORIGINAL: hawgman
People don't talk much about the 3.90s because Ford does not make a 3.90 gearset for the 8.8" rear end. Motive makes 3.90s for the 8.8 but they are noisey as hell. You can get them micronite coated for an additional $200 and it helps, but they are still not as quiet as Ford gears.
People don't talk much about the 3.90s because Ford does not make a 3.90 gearset for the 8.8" rear end. Motive makes 3.90s for the 8.8 but they are noisey as hell. You can get them micronite coated for an additional $200 and it helps, but they are still not as quiet as Ford gears.
07-07-2006, 09:34 PM
#8
I ♥ Acer
Join Date: Feb 2005
Location: Texas
Posts: 3,225
RE: Gears 3.90
ORIGINAL: mustangman02232
the only reason gears should whine is if they are installed incorrectly, if they are installed correctly they will NOT whine no matter who makes them
the only reason gears should whine is if they are installed incorrectly, if they are installed correctly they will NOT whine no matter who makes them
07-07-2006, 09:53 PM
#9
2nd Gear Member
Join Date: Sep 2005
Location:
Posts: 184
RE: Gears 3.90
In my S2K I had Richmond Racing gears. They were noisey and became a annoying. Many people on the S2K boards said the Richmonds were noisey due to the straight teeth of racing gears... where as factory gears do not typically have straight teeth, not sure if these motives are the same way...
