Torque Gained
Thread Starter
Racer
Joined: Oct 2002
Posts: 494
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From: Victoria BC
Torque Gained
Anyone know how much torque I should pick up changing 2.59 gears to 3.73 gears? Everyone talks about how much differance it makes but do we have any real numbers without other mods to consider?
I read that you should gain about a tenth of a second in the quarter for every two tenths change in gear ratio. 2.59 to 3.73 is a change of 1.14. This divided by 2 (for two tenths) is 0.57 seconds ???? Am I doing this right and how does this equate out in torque values?
I read that you should gain about a tenth of a second in the quarter for every two tenths change in gear ratio. 2.59 to 3.73 is a change of 1.14. This divided by 2 (for two tenths) is 0.57 seconds ???? Am I doing this right and how does this equate out in torque values?
Team Owner
Joined: Sep 2001
Posts: 62,137
Likes: 1,727
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: Torque Gained (jodyeastman)
You dont really gain torque numbers from it. You just get to feel the torque you already have.
Team Owner
Joined: Dec 2000
Posts: 90,675
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From: SE NY
Cruise-In II Veteran
Re: Torque Gained (jodyeastman)
True torque at the carnk remains the same but at the rear wheels it increases as the ratio of the gear change.
On the down side you will come out of each gear quicker, resulting in loss of torque. So 1/4 mi times may not change much.
On the down side you will come out of each gear quicker, resulting in loss of torque. So 1/4 mi times may not change much.
Le Mans Master
Joined: Apr 2000
Posts: 5,713
Likes: 105
From: Manassas VA
Re: Torque Gained (65Z01)
Nickd, a forum member on here with a 94, went from 2.59 to 3.54 and increased his 1/4 times by .5 seconds and mph by 4mph, I believe is what he posted. Now I believe it was with drag radials as well. The increase is going to depend on if the gear change causes a traction problem as well.
Thread Starter
Racer
Joined: Oct 2002
Posts: 494
Likes: 0
From: Victoria BC
Re: Torque Gained (jodyeastman)
Yeah, thanks for the responces guys. I knew that the output torque from the engine would not increase but I was wanting the increase at the rear wheels. I am confused by the answers though because most of you in the forum have changed gears and have had all great things to say but one responce here was that it could make my car slower.
Cheers
Jody :confused:
Cheers
Jody :confused:
Melting Slicks
Joined: Sep 2000
Posts: 3,099
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From: PITTSBURGH PA
Cruise-In IV Veteran
Cruise-In V Veteran
Re: Torque Gained (jodyeastman)
COULD GO SLOWER IF YOU ARE SPINNING AND CANT HOOK IT UP
id say 2-3 tenths are realistic if you dont lose any traction :cheers:
id say 2-3 tenths are realistic if you dont lose any traction :cheers:
Racer
Joined: Jul 2002
Posts: 269
Likes: 0
From: Paris AR, USA
Re: Torque Gained (jodyeastman)
Well I'm certain it'll make your car FEEL quicker. Indeed, I wouldn't be surprised if you gained 2 tenths. For quicker acceleration it's all about matching the rear-end ratio to your combination and your torque curve. (And being able to hook up, as mentioned above) On a L98 you have to be careful not to gear the car such that you spend all your time above 3000 RPM, because the motor runs out of breath. You have to gear to make the most of the low-RPM power. With your LT1 you have more rev-range to work with and 3.73's will probably work for you. I would think that's about as low as you'd want to go, however.
[Modified by needanother1, 12:46 AM 11/8/2002]
[Modified by needanother1, 12:46 AM 11/8/2002]
Team Owner
Joined: Sep 2001
Posts: 62,137
Likes: 1,727
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: Torque Gained (needanother1)
in an LT1, youd prolly gain a couple tenths on average from the stock gearing, only reason youd be slower is if you dont know how to launch and end up spinnin the tires
only downside would be some small loss in mpg
only downside would be some small loss in mpg
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Drifting
Joined: Oct 2001
Posts: 1,759
Likes: 0
From: Round Rock,Austin, Texas
Re: Torque Gained (jodyeastman)
If you wanna here my testimony on how gears are way more than worth the $ look at my post. http://forums.corvetteforum.com/zerothread?id=429346