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I've been drag racing in Arizona for 20+ years.
FireBird was always about .15 quicker than S.I.R. as a minimum.
There is that much altitude differance.......
I'm sure there's altitude difference but a little over a tenth is almost nothing when 2 cars are a second and a half apart. Say DJ ran 13.8 at firebird, being conservative and taking away .15 he still is capable of a 13.95. There's no elevation changes where I'm at and the 3 tracks around me differ by 1 or 2 tenths. Prep, timing systems and slight temp changes will do that.
Mods are smog delete, CAI, and ported GT40p heads. That's it. Stock 2.73 gearing and ran on Falkien tires. Ran a 14.7 bone stock and a 13.9 after mods.
Mods are smog delete, CAI, and ported GT40p heads. That's it. Stock 2.73 gearing and ran on Falkien tires. Ran a 14.7 bone stock and a 13.9 after mods.
One thing about S.I.R. on test/tune nights is that usually there is next to nothing for track prep.
If I take my 10.80 car out there I'll wait until a bunch of cars have made runs before I even bother to make a run.
Otherwise it's pedaling, skating and generally not a real good run.
Car will give me a 11.75 or something when I know theres a 10.80 in it......