How do 4.10 gears feel. I know from a start you would take off like a rocket but how hard do they pull at like 60-70-80-90 mph. But from a 65 roll would 3.42 or 4.10 gears pull harder? Since I do highway drive I was told 4.10 should be the max, would 3.90 be better?

 

well, having that gear loweres the mph where your sweet spots are. such as my sweet spots now with 4.10's are 15 to 25 and 45 to 55. thats when it kicks down to first and second respectively. from 60 on it drops to third gear. i haven't had any problems pulling away from single cab rams with the 5.7L in it from 65 to 70ish.

 

I would not do 4.10 if you do highway racing and you have the stock cam.

 

Well the cam I have is the TR220 112, so would 3.90 be better? I am also going to do a high stall 3200 or so. I was told to keep the 3.42's or go all the way to 4.10. The bad thing about these 3.42 gears is they have noting from the start. But like I have read before there is not much difference from a 3.90 and a 4.10. I am just confused, because the next thing I will get for my truck is a Eaton posi and new gears.

 

i think you would be fine. however tiburon is right about if you plan on racing a lot on the interstate hwy don't do it. i would go 3.73 for that. if you do mostly city or town driving, then yes i say go with them. they will help you get a lot of your bottom end back. and a converter will be a nice addition. not sure i would go with a 3200 stall with 4.10's. maybe 3.73 or 3.90's. that is if you don't have et streets or a drag radial of some sort.

 

Down low the 4.10s feel amazing and if you floor it down low it will pull hard all the way up, but if you are going from a roll up top it will not pull very hard at all. I was on the loop a few nights ago next to a friend in a bone stock Grand Am and we took off from like 70 and he pulled by me pretty easily. We got up next to each other again going just a little bit slower and I was able to hit a better rpm range in the lower gear and I was gone. Just depends on what speed you take off from. I know my 3.42s pulled a LOT harder up top from a 60 or 70 roll, but down low the 4.10s have almost neck-snapping acceleration compared to the 3.42s.

 

I think it's safe to say that your best roll speeds will change because your gears will hit at different speeds, but don't be confused. The 4:10 gears will help your truck accelerate faster, PERIOD. Just don't race people at rolls that put you in the bottom of a gear. I went from a 3.73 to a 4.10 and the biggest difference I noticed was 65 to 90 acceleration, but my situation is different since I have a 5-speed. The 3.90 ratio will narrow your options as far as manufacturers. If you're concerned about mileage at all or do a lot of freeway driving, I'd say go with the 3.73.

 

I love my 4.10's. Its fun it makes it really snappy. All I gots to say THANK GOD FOR OD!

 

All this being said, go with some 3.73. I love mine in both of my trucks.