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what rpm are you at at 85mph

This is a discussion on what rpm are you at at 85mph within the Firebird / WS6 forums, part of the Vehicle Specific category; hey just wondering what rpm you guys are runnin at at 85mph...im runnin at 3g's....just wondering if thats average or ...

  1. #1
    Member twoolley08's Avatar
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    what rpm are you at at 85mph

    hey just wondering what rpm you guys are runnin at at 85mph...im runnin at 3g's....just wondering if thats average or high, also what do u idle at? im at 900

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    Slow'er'Ass Mr. Luos's Avatar
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    M6 or A4?
    Tire size?
    Gears?

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    Formula Driver! 96Firebirdformula's Avatar
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    Quote Originally Posted by twoolley08 View Post
    hey just wondering what rpm you guys are runnin at at 85mph...im runnin at 3g's....just wondering if thats average or high, also what do u idle at? im at 900
    With 3.73s at 85 mph with A4 its almost 3k rpm.

    http://www.f-body.org/gears/

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    Impounded
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    Quote Originally Posted by 96Firebirdformula View Post
    With 3.73s at 85 mph with A4 its almost 3k rpm.

    http://www.f-body.org/gears/
    why is there no option for 99-02 f bodies on that calculator.??

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    Slow'er'Ass Mr. Luos's Avatar
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    Quote Originally Posted by the_formula View Post
    why is there no option for 99-02 f bodies on that calculator.??
    Use the 98's factors. They are the same.

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    War Machine BIG GUNS's Avatar
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    Quote Originally Posted by Mr. Luos View Post
    Use the 98's factors. They are the same.
    Wish I was able to answer those type questions......lol. Oh well, if I keep reading, I'll learn. I'm still a way noob when it comes to F-bodies but, I'm willing to learn.

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    Member twoolley08's Avatar
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    its a4 gears i called the dealer they said 3.23 not sure tho if its been changed or not tires are 295/35z/18 how about your idle speeds??? what are you guys at?

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    Member ldanny's Avatar
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    like bout 2k, m6, 315/40/17

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    Member Fearls1's Avatar
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    About 1900 I think... with 3.73 275/40/18's. And M6 of course.

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    Member twoolley08's Avatar
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    so what rpm you guys idling at???

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    Member Fearls1's Avatar
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    I idle at 750 solid as a rock

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    Carless blkSS98's Avatar
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    I'm at like 2500 at 85 in 5th. I don't know my gears, one of the optional factory ratio's.

    m6
    275/40/17

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    Larry Dingleberry Racing
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    a4 with 3.73's 245/50/16 at a little over 3k

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    Yo Da Lin The Valley..... astyles's Avatar
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    a4 stock 273's and 245/50/16 2k ish

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    What mods did you have to do to fit your 315/40/17 under the back? What size are you wearing in the front? I have 275/40/17 all the way around, want to go bigger in back but tires cost too much if they dont fit. So its nice to know that some on has done it!

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    Slow'er'Ass Mr. Luos's Avatar
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    315's don't fit safely on the stock wheels.

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    Yo Da Lin The Valley..... astyles's Avatar
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    --------------------------------------------------------------------------------

    After lowering, I decided to get my chrome SS 10-spokes widened to 11" in the rear. I sent them off to Weldcraft Wheels in Michigan for about 3 weeks and then got them back. They came out nice too. The welds were really good. I wrapped them in some new Goodyear Eagle F1 GSD3's 315/35/17. Let me tell you, these are some WIDE tires. Much wider than the Nitto 315's. I had to pound the fenders just a little bit, also had to get 1 1/4" billet adapters to make them fit (since the 2" was added to the inside of the wheel). I borrowed a fender rolling tool (Eastwood Co.), and it was really easy, no paint damage when rolling.

    It was 200/wheel for chrome (175 if not chrome) + shipping. ~60-90 for 1 1/4" wheel adapters with studs. And the cost of the tires. Definately needed an adjustable panhard bar too.

    Well worth the cost IMO, there are only a handful of us out there with widened 10spokes. After I saw Avengeance's widened wheels (had been thinking about it..) I knew Weldcraft was the right place to go.





    i got this on another site

    Last edited by astyles; 08-06-2008 at 04:29 PM.

  18. #18
    Member twoolley08's Avatar
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    my ta is idling at 1000 in park 900 in gear...maybe tuned?

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    Slow'er'Ass Mr. Luos's Avatar
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    Quote Originally Posted by astyles View Post
    After I saw Avengeance's widened wheels
    Do you know Nick personally?

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    Junior Member
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    Quote Originally Posted by Mr. Luos View Post
    315's don't fit safely on the stock wheels.
    back to the 315's I have the c5 corvette wheels on my car not stock 10" wide will I need to do anything to fit the 315's

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