Gear help... 3:90 or 4:10
05-22-2008, 04:25 PM
#11
5th Gear Member
Join Date: Aug 2007
Location:
Posts: 2,135
RE: Gear help... 3:90 or 4:10
Motive is the only mfg to make 3.90s. Motive Gears are horrible, they whine and often have poor construction. Therefore my vote goes for the 4.10s. I know I'm late but it should just make your decision that much better.
05-22-2008, 06:15 PM
#12
5th Gear Member
Join Date: Jul 2007
Location: TX
Posts: 4,897
RE: Gear help... 3:90 or 4:10
I'm kinda with Blustar on the 3.73's. I have 4.56's in my truck and can roll OVER people on the highway at 70-80 mph but I'm really roaring . It's fun, but if I had to do a LOT of highway driving it would get annoying.
You also have to consider wheel diameter. When I put 20' wheels on the truck with the 3.08's (or whatever wimpy gears it had) it would bog big time w/auto trans. After the 4.56 upgrade it bites through all gears.
Soooo, if you're sticking with 17-18' wheels I would suggest 3.73's. With 20' wheels like I have now with 3.55's I'm dreaming of 4.10's
.
. It's fun, but if I had to do a LOT of highway driving it would get annoying.You also have to consider wheel diameter. When I put 20' wheels on the truck with the 3.08's (or whatever wimpy gears it had) it would bog big time w/auto trans. After the 4.56 upgrade it bites through all gears.
Soooo, if you're sticking with 17-18' wheels I would suggest 3.73's. With 20' wheels like I have now with 3.55's I'm dreaming of 4.10's
.
05-22-2008, 08:19 PM
#14
5th Gear Member
Join Date: Apr 2007
Location: North Carolina
Posts: 3,070
RE: Gear help... 3:90 or 4:10
05-22-2008, 11:45 PM
#17
2nd Gear Member
Join Date: Sep 2006
Location: Portland, OR
Posts: 255
RE: Gear help... 3:90 or 4:10
On my highway commute in semi-thick traffic I didn't lose any mpg because now I get into 5th at 60-65 mph. Before I didn't like getting into 5th until 70+. When I'm cruisingaround town or dealing with slow highway traffic I just get into 3rd and leave it there; before I was shifting more between 2nd to 3rd. Overall on a full tank of gas I went down -1 mpg which is nothing compared to the performance gain from the 3.55s.
As for when you need/want to kick it up a notch...I can be cruising in 5th at 70, drop into 4th and be at 100+ in a heartbeat
As for when you need/want to kick it up a notch...I can be cruising in 5th at 70, drop into 4th and be at 100+ in a heartbeat
05-23-2008, 12:21 AM
#18
4th Gear Member
Join Date: Apr 2007
Location:
Posts: 1,602
RE: Gear help... 3:90 or 4:10
I got 300 miles to a tank with 4.10s doing 70mph on the highway.
as far as roll racing they will help. I raced a srt-4 and started pulling in 4th gear. He put down 315 so his hp was about equal to mine.
as far as roll racing they will help. I raced a srt-4 and started pulling in 4th gear. He put down 315 so his hp was about equal to mine.
05-23-2008, 08:17 AM
#20
4th Gear Member
Join Date: Mar 2008
Location: Georgia
Posts: 1,860
RE: Gear help... 3:90 or 4:10
i love my 4:10's.....one of my favorite mods!!!!! as far as motives, stay away....1 kind is bad enough,2 is worse....go with richmond or ford racing gears....you will thank yourself for it!