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 97-99 supercharged gear ratio's

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knight rider
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Name : derrick
Joined : 2012-07-20
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PostSubject: 97-99 supercharged gear ratio's    Fri Jul 20, 2012 3:03 am

i wanted to know what gear ratio these transmissions have? and what is the best gear ratio to get these heavy cars moving ?
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albertj
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Location : Finger Lakes of New York State
Joined : 2007-05-31
Post Count : 6763
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PostSubject: Re: 97-99 supercharged gear ratio's    Fri Jul 20, 2012 4:40 pm

First 2.921:1
Second 1.568:1
Third 1.000:1
Fourth 0.705:1
Reverse 2.385:1

Chain ratio: 37/33 on drive/driven sprockets
Final drive 3.29
overall final drive 2.93

Best gear to get it moving - whatever gear you have to wear to get a good trade for it on a Firebird. wink (just kidding)
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knight rider
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Name : derrick
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PostSubject: Re: 97-99 supercharged gear ratio's    Fri Jul 20, 2012 8:59 pm

so i have the same gears as my 01 gs. i wonder how bad gas mileage will be with 3.29 gears.
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albertj
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PostSubject: Re: 97-99 supercharged gear ratio's    Fri Jul 20, 2012 9:49 pm

knight rider wrote:
so i have the same gears as my 01 gs. i wonder how bad gas mileage will be with 3.29 gears.

Stock, the N/A Riv can get 30+ MPG on the highway. The SC runs around 27. There is some sample variation due to using synth oil or more efficient replacement tires and such. Rivs don't get such great city mileage in practice. Given the size of the car and the technology of the engine (a superb pushrod engine) the mileage is very decent. In top shape, stock, you should be able to do 0-60 in around 7 seconds +/- 0.2 sec.

You will have to look into whether gear sets from a different transmission of the same series will fit your car, I really don't know.

You might want to look at threads on this site from some years back and trace the moderator's (Aaron) mods.

It might be more productive to look into boosting engine power. the 4T65E is a good slushbox but it is still a slushbox.
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