# overdrive on Automatic **URL:** \ **Category:** SON240sx Automotive\ **Created:** [April 24, 2006, 3:55pm UTC](https://forums.speedlife.net/t/overdrive-on-automatic/95219 "2006-04-24T15:55:50Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Lucas180](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/lucas180/32/5556_2.png) [@Lucas180](https://forums.speedlife.net/u/Lucas180)\ **Post date:** [April 24, 2006, 3:55pm UTC](https://forums.speedlife.net/t/overdrive-on-automatic/95219/1 "2006-04-24T15:55:50Z")
What does it even do…i want to get a differtn shifter but it will take away that button…shouldi worry about loseing it? ---
**Author:** ![240coupe](https://avatars.discourse-cdn.com/v4/letter/2/e495f1/32.png) [@240coupe](https://forums.speedlife.net/u/240coupe)\ **Post date:** [April 24, 2006, 4:05pm UTC](https://forums.speedlife.net/t/overdrive-on-automatic/95219/2 "2006-04-24T16:05:33Z")
overdrive is the fuel saving gear it gives u almost no acceleration but good fuel economy ---
**Author:** ![Lucas180](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/lucas180/32/5556_2.png) [@Lucas180](https://forums.speedlife.net/u/Lucas180)\ **Post date:** [April 24, 2006, 4:12pm UTC](https://forums.speedlife.net/t/overdrive-on-automatic/95219/3 "2006-04-24T16:12:20Z")
when it is on it does this? ---
**Author:** ![cloudzero3](https://avatars.discourse-cdn.com/v4/letter/c/2acd7d/32.png) [@cloudzero3](https://forums.speedlife.net/u/cloudzero3)\ **Post date:** [April 24, 2006, 5:02pm UTC](https://forums.speedlife.net/t/overdrive-on-automatic/95219/4 "2006-04-24T17:02:11Z")
i have an idea… get a 5spd swap along with that new shifter. 😉 No worries about an overdrive button that way! ---
**Author:** ![Zeta\_G](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/zeta_g/32/5558_2.png) [@Zeta\_G](https://forums.speedlife.net/u/Zeta_G)\ **Post date:** [April 24, 2006, 5:04pm UTC](https://forums.speedlife.net/t/overdrive-on-automatic/95219/5 "2006-04-24T17:04:21Z")
> [@GTChampion](#): > > when it is on it does this? on the auto 240 (it is 4spd AT rite???) it has 3 gears which the gear ratio is lower then 1(0.xxx) and that ratio give u mechical adventage, so the engine don need to work as hard to move the car, but doesn’t give u as much spd… and the O/D gear(4th gear) has a gear ratio over 1(1.xxx) which let u maintain at teh spd w/ less effort, but doesn’t have too much accelation… when the O/D is on the computer let the tranny to shift up to 4th to give u gas mileage… when u locked it(O/D off) the computer will only let the tranny shifts up to 3th and holds it there… this happens when u puts it in 2 or L as well… it just holds in the gear… neways… this is a bit off topic… does neone have a gear ratio chat for a S13 MT tranny??? i just wanna know if the MT tranny have O/D too well i think it does, but just wanna confrim… ---
**Author:** ![greybrother](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/greybrother/32/5551_2.png) [@greybrother](https://forums.speedlife.net/u/greybrother)\ **Post date:** [April 24, 2006, 5:43pm UTC](https://forums.speedlife.net/t/overdrive-on-automatic/95219/6 "2006-04-24T17:43:44Z")
MT Gear Ratios From The s13 Factory Service Manual (Download It!) 1st 3.321 2nd 1.902 3rd 1.308 4th 1.000 5th/OD 0.759 Reverse 3.382 ---
**Author:** ![Lucas180](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/lucas180/32/5556_2.png) [@Lucas180](https://forums.speedlife.net/u/Lucas180)\ **Post date:** [April 24, 2006, 6:16pm UTC](https://forums.speedlife.net/t/overdrive-on-automatic/95219/7 "2006-04-24T18:16:40Z")
Intresting…anyone know the ratio for the auto trans? ---
**Author:** ![Zeta\_G](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/zeta_g/32/5558_2.png) [@Zeta\_G](https://forums.speedlife.net/u/Zeta_G)\ **Post date:** [April 24, 2006, 6:27pm UTC](https://forums.speedlife.net/t/overdrive-on-automatic/95219/8 "2006-04-24T18:27:30Z")
> [@greybrother](#): > > Gear Ratios From The s13 Factory Service Manual (Download It!) > > 1st 3.321 > 2nd 1.902 > 3rd 1.308 > 4th 1.000 > 5th/OD 0.759 > Reverse 3.382 o thx… and damn i messed up on the gear ratio thing… hahahhahahhaha