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Race Gas, Do I need it?

Discussion in 'The Hokey Ass Message Board' started by buzzard, Oct 6, 2004.

  1. buzzard
    Joined: Apr 20, 2001
    Posts: 4,335

    buzzard
    Alliance Member

    Mutt, thanks for the links. Very interesting stuff. I figured 38Chevy454 was right in the other post, but I wanted to bring it up for discussion so others got to see it. It's just real suprising to me.
     
  2. krupanut
    Joined: May 4, 2001
    Posts: 1,619

    krupanut
    Member

    Yeah, it says I should be running 11.99 at 108! [​IMG]
     
  3. flynj1
    Joined: Mar 4, 2001
    Posts: 583

    flynj1
    Member
    from C.B. IOWA

    Back to the gas, raceing fuel has a lower flash point so you can run more comp., You need to run atleast 10. 1 to make it work, at 9.3 you will go slower because the fuel wont burn fast enough to be efishent because of lack of comp.
     
  4. OldCarPilot
    Joined: Apr 1, 2003
    Posts: 1,292

    OldCarPilot
    Member
    from Bel Air MD

    To answer your question... No. Not with your setup. [​IMG]
    There is a LOT going into the new Vette. The coputer helps the car run at optimum air/fuel ratio through out its RPM range. Its weight is almost 50/50 front and rear. Traction controls... etc. Stuff that the older cars just don't have.
     
  5. Deyomatic
    Joined: Apr 17, 2002
    Posts: 3,316

    Deyomatic
    Member
    from CT

    Buzzard, I'm not saying I'd bet my life on the accuracy of the results of that calculator, but that particular one is supposed to find the "optimum" gearing for the 1/4 mile straight line. I definately don't think enough people consider gearing.

    My friend has a 90s Eagle Talon with the AWD and turbo. He ran a 13.7 with minimal bolt on mods. In stock form, that 2.0L motor was pushing 195 HP. His was probably around 300. Believe it or not, this is about a 3000 lb car.
    I put a 350 hp small block in my 80s Caprice, which is also about a 3000 lb car, and the best time I could run with that was 16.2. Traction was not an issue, because as you will see, the gearing wasn't such to allow the tires to lose alot of traction. I'd bet that if you figured the HP that gets to the wheels, it would be VERY similar to my buddy's Talon, which had a 5 speed manual ******. Mine was an auto.

    So, to draw this out even more...we have similar HP and similar weights, but we have about a 2.5 second difference. The Talon runs a 4.15 gear ratio and my Caprice had a 2.73.

    Sorry for the boring, long winded, late model explanation, but I really think you need lower gears!
     
  6. buzzard
    Joined: Apr 20, 2001
    Posts: 4,335

    buzzard
    Alliance Member

    I agree that I probably need some lower gears. And I'm working on a solution! Thanks for the input.
     
  7. 3blapcam
    Joined: Jul 15, 2004
    Posts: 601

    3blapcam
    Member

    What engine are you running? Carb? Gear and Tire size? I'm sure your coupe will go 12's with a half *** built 350 w/ good carb and good tires. How much does it weigh? If you're trying to run 12's/100mph w/ a vacuum secondary 600 Holley... good luck. If you had a 383, dart heads, and demon carb, I could see your concern on why it won't do it.



     
  8. buzzard
    Joined: Apr 20, 2001
    Posts: 4,335

    buzzard
    Alliance Member

    327, Dual Edelbrock 500CFM carbs, 2.02/1.60 camel humps, roller rockers, Comp Cams XE274H cam, stock bottom w/ flattop pistons, Muncie, 3.55's (open right now), with 235/75 28.3 tall tires (radials?! [​IMG])

    I have no idea how much it weighs. Thats a good question. How much does a fenderless A with a SBC weith?
    Anyhow, that's my rundown.
     
  9. 3blapcam
    Joined: Jul 15, 2004
    Posts: 601

    3blapcam
    Member

    Sounds like a pretty stout setup. I'm not a Chevy guy, so I don't know what cam that is off the top of my head. I don't think you can get a whole lot more out of that motor without hogging out the heads (***uming they aren't) or increasing compression/lightening the pistons. I saw it run at the DOTD, but I don't remember how far off your goal you are. Put cheater slicks on it and it'll probably do what you want. I don't know what that weighs, maybe 2000lbs w/ driver?!

    "I need Naws, I need Naws now!" -- best line ever.
     
  10. plan9
    Joined: Jun 3, 2003
    Posts: 4,134

    plan9
    Member

    [ QUOTE ]
    327, Dual Edelbrock 500CFM carbs, 2.02/1.60 camel humps, roller rockers, Comp Cams XE274H cam, stock bottom w/ flattop pistons, Muncie, 3.55's (open right now), with 235/75 28.3 tall tires (radials?! [​IMG])

    I have no idea how much it weighs. Thats a good question. How much does a fenderless A with a SBC weith?
    Anyhow, that's my rundown.

    [/ QUOTE ]

    you can go to a weigh station and see if theyll weigh the car [​IMG]

    eventhough the race gas question has been answered, i find it funny when people with econo cars insist on putting 91 octane into their tanks. Urban Legend - running higher octane will give better performance and keep the engine in good running order. heh...
     
  11. Hellbilly_Buzzard
    Joined: May 5, 2004
    Posts: 454

    Hellbilly_Buzzard
    Member

    All you will do is polute more and lighten the wallet with a higher octane fuel if it is not necessary especially with a lower compression engine.
     
  12. Hanible_H20
    Joined: Feb 22, 2004
    Posts: 40

    Hanible_H20
    Member

    In cl***es that don't allow aftermarket heads, a lot of guys are running 305 heads. They don't flow as good as aftermarket, but what they lack in flow, they make up for in increased compression.
     
  13. tomslik
    Joined: Mar 3, 2001
    Posts: 2,161

    tomslik
    Member

    might try backing off the timing a couple of degrees and see.
    yep, i'm serious.
     

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