Fman67

Just wondering who has this set up and what do you think. I am considering a gear swap in my Automatic. I have read the auto's don't need much gear. Looking for some more grunt off the line!

tmcolegr

I had the 3.73s and traded them in for 4.10s before installing. Lot of expense to go to for only a 12.7% change. I opted for the 4.10s as that is a 23.9% change. Most of my driving is in town and fuel mileage has not suffered. Only thing I should mention is the 1-2 & 2-3 shifts come very quick now. Even that can be changed if you don't like it but I have not.

bigaloz

I thought about this for a while before I decided to go with the 4.10's
In my opinion the change from 3.31 to 3.73 wasn't going to be that noticeable

MrMorden

3.73 is not the right gear...4.10 or 4.30 is best for these cars, just as it is for 99-04 cars. 4.10 if you rarely go to the track, 4.30 if you're a track girl of ill repute.

sranger

You guys might want to read the info from Alternative Auto. They have probably done more on the Autos that anyone.

Alternative Auto

Here is a direct quote from them:


"Our car has a 3.55 in the axle, not the stock 3.31. But the 3.55s are a total wash because all they do is make up for the 1.5” taller rear tire we run on a 20” rim. Plus our 12 second ET’s came with the regular rear tires on the 20 rims. Not a drag radial! As I suspected and predicted, the automatics will only need a very subtle gear change for some good quarter mile performance.
"