4.10:1 Gears Installed in My Automatic GT!
03-20-2009, 08:06 AM
#24
4th Gear Member
Join Date: May 2007
Location: Utah
Posts: 1,249
Since you have an auto...you need a new tune written by Doug for the 4.10's. It's mandatory. I only mention this cuz you didn't...so i'm just throwing it out there for anyone else who wants to do a gear swap in the auto.
Last edited by grampa_stang; 03-20-2009 at 08:17 AM.
03-20-2009, 10:11 AM
#25
2nd Gear Member
Join Date: Jan 2008
Location: Florida
Posts: 363
I take it this goes for the 3:73's also? I thought all you had to do was change the SCT programmer to 3:73's?
03-20-2009, 10:15 AM
#26
2nd Gear Member
Join Date: Jul 2005
Location: Orlando, FL
Posts: 177
+1, I definitely second that. I'm in a manual, but 4.10s make the car feel much more right to me. Around here the fastest you can get on the highway is mostly 55 or 65 or 70 in some rare places. I've never felt the 4.10's were 2 high up in RPMs on the highway. I still enjoy dropping it into 4th and being right in the fat part of the power band.
03-20-2009, 10:20 AM
#28
6th Gear Member
Join Date: Nov 2007
Location: Montaner
Posts: 6,193
I've got 3.55 right now and cruise a lot around town at 40-45mph in 4th gear. I'm guessing with 4.10 I will probably do the same thing. The car will just run a few hundred rpm higher. No big deal. If anything it'll sound better that way. 
Waiting for Mishri to get his done. I want to see if there is any gear whine. If it's not bad then I might consider getting mine done by the same shop.
Waiting for Mishri to get his done. I want to see if there is any gear whine. If it's not bad then I might consider getting mine done by the same shop.
