just a few trans and RPM questions for automatics - Transmission Forum

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just a few trans and RPM questions for automatics
Thursday, May 26, 2005 8:55 PM
ok ive been thinking lately of raising the redline for me 01 Automatic cavy. I like to drag race the car, but 3rd gear is just a killer when it first shifts. I was thinking if i upped the redline to 7,000 RPMS, it wouldnt be so dead. But that got me thinking, when your at WOT, does the transmission shift at whatever the redline is set to, or does it have a preset RPM to shift at. Like even though the cars redline is 6500 RPMS, its told to @!#$ at 6500 RPMS and only 6500 RPMS, so even if the engine could rev to 7,000 RPMS, it would still shift at 6500 RPMS? Also im not gonna do a VSS mod, i dont care for all out speed, but would a VSS mod even work on automatic transmission? I mean if your cutting the wire that tells the cars computer what speed the transmission is going at, wont that mean the computer wont know when it should shift gears?


2006 Black Cobalt SS Supercharged G85
13.91@102.77

Re: just a few trans and RPM questions for automat
Thursday, May 26, 2005 9:06 PM
i heard the vss mod works on autos, i think it shifts based on pressures, not speed



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Re: just a few trans and RPM questions for automat
Thursday, May 26, 2005 9:17 PM
most transmissions shift with line pressure...the 3 speed is all pressure... the 4 speed is electronic.

my guess would be to find someone that can reprogram the comp...reflash. like jbodyperformance, but 600$ though.



Re: just a few trans and RPM questions for automat
Friday, May 27, 2005 8:44 PM
You would have to have a hell of a cam and springs to make it worth while in my opinion...


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Re: just a few trans and RPM questions for automat
Sunday, May 29, 2005 10:56 AM
or a supercharger


2006 Black Cobalt SS Supercharged G85
13.91@102.77
Re: just a few trans and RPM questions for automat
Saturday, June 11, 2005 6:41 PM
What is the vss mods....
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