Final gear ration calculation?
Thread Starter
Le Mans Master
Joined: Apr 2000
Posts: 7,562
Likes: 9
From: B'Ville NY
Cruise-In III Veteran
St. Jude Donor '05
Final gear ration calculation?
I'm I doing this correctly? I have 3.90 rear gear ratio, and the new transmission has .68 O/D ratio. What I come up with is 2.56 final gear ratio (3.90x.68) . If this is correct, I'm very excited to drive it on the highway to see the difference :yesnod: .
If I did the math wrong, please correct me. Thanks :cheers:
If I did the math wrong, please correct me. Thanks :cheers:
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Re: Final gear ration calculation? (SmokedTires)
If my 4.11 richmond gears ever go out I'm going 3.90 just to drop a few hundred rpm out on the freeway. Either that or a 6 speed with 2 overdrive gears. :seeya
Melting Slicks
Joined: Nov 2000
Posts: 2,663
Likes: 3
From: Palm Harbor FL
Re: Final gear ration calculation? (SmokedTires)
SmokedTires: If you want, I have an Excel spreadsheet I built where you put in your tranny gear ratios (1st up to 6th if you have them), your rear end ratio, your tire diameter, and your engine redline, and it calculates out what speed you're at at different rpm's in each gear, as well as what rpm you're at at different speeds in each gear. If you'd like, I'll e-mail it to you.
Thread Starter
Le Mans Master
Joined: Apr 2000
Posts: 7,562
Likes: 9
From: B'Ville NY
Cruise-In III Veteran
St. Jude Donor '05
Re: Final gear ration calculation? (79MakoL82)
79MakoL82 Sure, send away! That sounds very :cool: , :yesnod: . Thanks.
Rod I got the crossbar, I had to modify the tranny housing alittle for it to be able to clear & mount to the trans mount. As it starts to warm, I'll be wrenching some more on it. Still need to locate a welded to borrow to get the crossbar mounted to the frame. Let me know if any of you vette guys have anything scheduled for a weekend day, maybe I can get the Syracuse Corvette Club to cruise out there one day.
Rod I got the crossbar, I had to modify the tranny housing alittle for it to be able to clear & mount to the trans mount. As it starts to warm, I'll be wrenching some more on it. Still need to locate a welded to borrow to get the crossbar mounted to the frame. Let me know if any of you vette guys have anything scheduled for a weekend day, maybe I can get the Syracuse Corvette Club to cruise out there one day.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
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
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski