gear question for automatic
12-05-2009, 09:43 PM
#1
2nd Gear Member
Thread Starter
Join Date: Jan 2009
Location: IN
Posts: 450
gear question for automatic
So everyone talk about getting 410 for manual and 373 automatics. I have an 07gt automatic and i want to get 410 this spring but was wondering why people say this. Is there a traction problem when u have 410 in an automatic from a stop. i would really like to hear from people that have 410 in an automatic to give me there thoughts. pros and cons from anyone really would be great thanks to all
12-05-2009, 11:57 PM
#3
2nd Gear Member
Join Date: Jan 2008
Location: NJ
Posts: 401
The gear ratios in our auto transmissions are different from a manual's transmission. IIRC, first gear in a manual is 3.38 and 3.22 in an auto. This simply means putting 4.10's on both transmissions will give different results. Some complain that the 4.10's are too short and you quickly run out of gear. You will also loose top speed. I think 3:90's in an auto are almost identical to 4:10's in a manual.
12-06-2009, 01:19 AM
#4
5th Gear Member
Join Date: Feb 2007
Location: Hawaii
Posts: 2,211
it's all about the gearing...and the fact that the Stall Converter in an Auto sucks up a little performance.
by going with a deeper gearset, you can slightly negate the stall converter. and it's also the basic gearing as described above by Jersey Stang. The Tranny itself has higher gears. putter the deeper gears (4.10) in the axle will really help things out.
If you drive mostly city, I personally would run 4.30 gears....and wide rear tires. But if you do any appreciable highway driving, the 4.10 gears will really be your best compromise. Still decent highway MPG, but a kick in the behind off the line
by going with a deeper gearset, you can slightly negate the stall converter. and it's also the basic gearing as described above by Jersey Stang. The Tranny itself has higher gears. putter the deeper gears (4.10) in the axle will really help things out.
If you drive mostly city, I personally would run 4.30 gears....and wide rear tires. But if you do any appreciable highway driving, the 4.10 gears will really be your best compromise. Still decent highway MPG, but a kick in the behind off the line
12-06-2009, 07:53 AM
#5
2nd Gear Member
Join Date: Aug 2009
Location: Virginia
Posts: 265
I have been using 4.10s in my 05 GT Automatic for two years and really like them. You get a real seat of the pants acceleration from the lower gears. For me I think 3.73s would have been a disappointment for the expense and effort invested.
12-06-2009, 10:29 AM
#6
2nd Gear Member
Thread Starter
Join Date: Jan 2009
Location: IN
Posts: 450
it's all about the gearing...and the fact that the Stall Converter in an Auto sucks up a little performance.
by going with a deeper gearset, you can slightly negate the stall converter. and it's also the basic gearing as described above by Jersey Stang. The Tranny itself has higher gears. putter the deeper gears (4.10) in the axle will really help things out.
If you drive mostly city, I personally would run 4.30 gears....and wide rear tires. But if you do any appreciable highway driving, the 4.10 gears will really be your best compromise. Still decent highway MPG, but a kick in the behind off the line
by going with a deeper gearset, you can slightly negate the stall converter. and it's also the basic gearing as described above by Jersey Stang. The Tranny itself has higher gears. putter the deeper gears (4.10) in the axle will really help things out.
If you drive mostly city, I personally would run 4.30 gears....and wide rear tires. But if you do any appreciable highway driving, the 4.10 gears will really be your best compromise. Still decent highway MPG, but a kick in the behind off the line
Thanks for the input I really appreciate it. I really dont drive my car much in town. A little bit. i work out of town for three weeks on and two weeks off. I use the car at the track a couple of times a year and then for vacationing and thats it. Sounds like a better stall converter could be in the near future
12-06-2009, 10:33 AM
#7
2nd Gear Member
Thread Starter
Join Date: Jan 2009
Location: IN
Posts: 450
Sounds great and thats what im looking for in my car is that taste of quickness that my dad always braggs about when he was a kid. U ever go to the track with ur car. IF so do u have to roll the throttle down when taking off.
thanks for the comment
12-06-2009, 10:35 AM
#8
2nd Gear Member
Thread Starter
Join Date: Jan 2009
Location: IN
Posts: 450
The gear ratios in our auto transmissions are different from a manual's transmission. IIRC, first gear in a manual is 3.38 and 3.22 in an auto. This simply means putting 4.10's on both transmissions will give different results. Some complain that the 4.10's are too short and you quickly run out of gear. You will also loose top speed. I think 3:90's in an auto are almost identical to 4:10's in a manual.
12-06-2009, 12:06 PM
#9
Gentleman's Relish
Join Date: Feb 2005
Location: AZ
Posts: 13,090
The gear ratios in our auto transmissions are different from a manual's transmission. IIRC, first gear in a manual is 3.38 and 3.22 in an auto. This simply means putting 4.10's on both transmissions will give different results. Some complain that the 4.10's are too short and you quickly run out of gear. You will also loose top speed. I think 3:90's in an auto are almost identical to 4:10's in a manual.
