Help! Power drop between 3rd - 4th
Thread Starter
Pro
Joined: Apr 2005
Posts: 535
Likes: 0
Help! Power drop between 3rd - 4th
Ok, what gives? When I shift from 3rd to 4th, I experience sort of a "bog" after engaging 4th gear. I'm WOT and even tried shifting at 6K RPM and still experienced the same thing. My (minor) mods are listed below but none of them are new...opinions please.
Corsa Sport
8.5mm plug wires
Stinger
Corsa Sport
8.5mm plug wires
Stinger
Drifting
Joined: Aug 2004
Posts: 1,532
Likes: 0
Originally Posted by 05_C6Z51
Ok, what gives? When I shift from 3rd to 4th, I experience sort of a "bog" after engaging 4th gear. I'm WOT and even tried shifting at 6K RPM and still experienced the same thing. My (minor) mods are listed below but none of them are new...opinions please.
Corsa Sport
8.5mm plug wires
Stinger
Corsa Sport
8.5mm plug wires
Stinger
Le Mans Master
Joined: Nov 2004
Posts: 6,566
Likes: 2
From: Goleta CA
Cruise-In VIII Veteran
Perhaps is it the gear ratio spacing that bothers you. Note what rpm you land at when shifting gears. 3rd to 4th might be a bigger jump, (I can't recall so I'm not sure if it is or not) causing the rpms to fall lower, making it feel slow.
What about shifting at 6500?
What about shifting at 6500?
Advanced
Joined: Oct 2005
Posts: 83
Likes: 0
This may be a quess here but make when you installed your stinger intake that you didn't somehow leave something loose or connected wrong(removed the MAF screen?). What your describing sounds kinda like a lean condition I got on my Mach 1 before I had the computer tuned with the Diablo. Mine would especially "fall on its face" when you downshifted from 4th to 3rd above say 4000rpm's while laying on the throttle.
Advanced
Joined: Sep 2004
Posts: 61
Likes: 0
From: Madison Alabama
Originally Posted by mlongo99
Perhaps is it the gear ratio spacing that bothers you. Note what rpm you land at when shifting gears. 3rd to 4th might be a bigger jump, (I can't recall so I'm not sure if it is or not) causing the rpms to fall lower, making it feel slow.
What about shifting at 6500?
What about shifting at 6500?
Drifting
Joined: Nov 2004
Posts: 1,923
Likes: 62
From: California
Originally Posted by mlongo99
Perhaps is it the gear ratio spacing that bothers you. Note what rpm you land at when shifting gears. 3rd to 4th might be a bigger jump, (I can't recall so I'm not sure if it is or not) causing the rpms to fall lower, making it feel slow.
What about shifting at 6500?
What about shifting at 6500?
The gear ratios on 4-6 is too far apart. Car feels a lot worse from 4-5. I know cus I've tried it. The ratios from 1-3 is great though
Le Mans Master
Joined: Nov 2004
Posts: 6,566
Likes: 2
From: Goleta CA
Cruise-In VIII Veteran
Originally Posted by DJackman
The gear ratios on 4-6 is too far apart. Car feels a lot worse from 4-5. I know cus I've tried it. The ratios from 1-3 is great though The one time I took it up to redline in 4th, I shifted to 5th and acceleration reduced drastically. It was kind of dissapointing because at those speeds I'm used to my bike which has a close spacing on all 6 gears.
Thread Starter
Pro
Joined: Apr 2005
Posts: 535
Likes: 0
Guys:
Thanks for the replies. I have over 10K miles on the car and this is a new condition. I'm aware of the gearing but that is not the issue here. This is a performance issue.
A couple of you mentioned tuning, and I like the idea. Is there much of a risk buying a tuner vs sending the PCM to someone for a custom tune /flash? i.e. Do the programmers get us close to one of the custom tuners without placing the motor at risk?
Thanks for the replies. I have over 10K miles on the car and this is a new condition. I'm aware of the gearing but that is not the issue here. This is a performance issue.
A couple of you mentioned tuning, and I like the idea. Is there much of a risk buying a tuner vs sending the PCM to someone for a custom tune /flash? i.e. Do the programmers get us close to one of the custom tuners without placing the motor at risk?
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