4.11 rear gear question
Thread Starter
Team Owner
Joined: Nov 2004
Posts: 20,715
Likes: 25
From: Sorrento Italy
4.11 rear gear question
a question about gears: if i get shorter rear gears in a 4 speeds trans car, lets say go from 3.70 to 4.11, will the four gears be 'shorter' or only the 4th will be shorter? (for shorter i mean that'll have same speed at higher revs or lower speed at same revs, in first/second/third and fourth) in the first case it would a help acceleration through the gears from standstill, in the second case it would be a waste of time and money.
am i right?
am i right?
Instructor
Joined: Jun 2006
Posts: 125
Likes: 0
From: East Windsor CT
All the gears would be shorter since you would be replacing the rear end gears, you wouldnt be touching the tranny gears. So it will help with acceleration, because you will be a higher rpm. You'll be turning more rpm for the same speed as with your 3.70. With 4.10's your car wont be liking the highway too much (or should I say your wallet wont be liking the highway because you'll be at a high rpm).
Thread Starter
Team Owner
Joined: Nov 2004
Posts: 20,715
Likes: 25
From: Sorrento Italy
Originally Posted by gorrie16
All the gears would be shorter since you would be replacing the rear end gears, you wouldnt be touching the tranny gears. So it will help with acceleration, because you will be a higher rpm. You'll be turning more rpm for the same speed as with your 3.70. With 4.10's your car wont be liking the highway too much (or should I say your wallet wont be liking the highway because you'll be at a high rpm).
Burning Brakes
Joined: Oct 2004
Posts: 763
Likes: 0
From: Loveland Colo
It affects all gears. You'll have faster acceleration, but lower speed at a given RPM. Here's a good chart to compare I just saw here today:
http://www.angelfire.com/fl/procrastination/rear.html
http://www.angelfire.com/fl/procrastination/rear.html
Thread Starter
Team Owner
Joined: Nov 2004
Posts: 20,715
Likes: 25
From: Sorrento Italy
Originally Posted by JPhil
It affects all gears. You'll have faster acceleration, but lower speed at a given RPM. Here's a good chart to compare I just saw here today:
http://www.angelfire.com/fl/procrastination/rear.html
http://www.angelfire.com/fl/procrastination/rear.html
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Giuseppe - I have the 4.11 rear end with the TKO 600 5 speed. 4.11 with a powerful motor like yours and mine is really fun to drive. It brings my first 4 gears closer together so the motor really stays in the power range after each shift.
When i shift at 7500 rpm it only drops 2500 or 3000 rpm during the shift so i'm right at near max TQ. Most of the C-3 road race machines use 4.30 or 4.11 for the lower speed tracks and 3.90 or 3.73 for the higher speed tracks. My local 3.8 mile road tracing track 4.11 is just about perfect because my 7500 rpm in 4th gear is only attained on the longest main straight and it's right about 140 mph. I hit the rev limiter just a few seconds before the braking point.
your race machine would really come alive with 4.11 or 4.30 My 5th gear is an over drive for open roads only
When i shift at 7500 rpm it only drops 2500 or 3000 rpm during the shift so i'm right at near max TQ. Most of the C-3 road race machines use 4.30 or 4.11 for the lower speed tracks and 3.90 or 3.73 for the higher speed tracks. My local 3.8 mile road tracing track 4.11 is just about perfect because my 7500 rpm in 4th gear is only attained on the longest main straight and it's right about 140 mph. I hit the rev limiter just a few seconds before the braking point.
your race machine would really come alive with 4.11 or 4.30 My 5th gear is an over drive for open roads only
Thread Starter
Team Owner
Joined: Nov 2004
Posts: 20,715
Likes: 25
From: Sorrento Italy
Originally Posted by gkull
Giuseppe - I have the 4.11 rear end with the TKO 600 5 speed. 4.11 with a powerful motor like yours and mine is really fun to drive. It brings my first 4 gears closer together so the motor really stays in the power range after each shift.
When i shift at 7500 rpm it only drops 2500 or 3000 rpm during the shift so i'm right at near max TQ. Most of the C-3 road race machines use 4.30 or 4.11 for the lower speed tracks and 3.90 or 3.73 for the higher speed tracks. My local 3.8 mile road tracing track 4.11 is just about perfect because my 7500 rpm in 4th gear is only attained on the longest main straight and it's right about 140 mph. I hit the rev limiter just a few seconds before the braking point.
your race machine would really come alive with 4.11 or 4.30 My 5th gear is an over drive for open roads only
When i shift at 7500 rpm it only drops 2500 or 3000 rpm during the shift so i'm right at near max TQ. Most of the C-3 road race machines use 4.30 or 4.11 for the lower speed tracks and 3.90 or 3.73 for the higher speed tracks. My local 3.8 mile road tracing track 4.11 is just about perfect because my 7500 rpm in 4th gear is only attained on the longest main straight and it's right about 140 mph. I hit the rev limiter just a few seconds before the braking point.
your race machine would really come alive with 4.11 or 4.30 My 5th gear is an over drive for open roads only
i just bought van steel rear axle/HD differential with 4.11 gears/offset TA and 3.5'' half shafts kit...so i'll test the whole thing this coming week end
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
