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IROC vs 99 + Mustang GT

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Old Jun 3, 2005 | 12:12 PM
  #1  
IROCThe5.7L's Avatar
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From: Buffalo, NY
Car: 1988 IROC-Z
Engine: 427 SBC
Transmission: ProBuilt 700R4
Axle/Gears: Moser 12 Bolt / 3.73 TrueTrac
IROC vs 99 + Mustang GT

Before I did headers and injectors, I raced a 99 + mustang gt. We both spun bad, I got the jump, then he slowly reeled me in and jumped a nudge ahead when we quit.

So last night I run into another mustang gt. I don't know mustangs well, but it was a newer model and a 5 speed.

I roll up to the red light where he is at, and it turns green before I am stopped. I roll by him at about 10 mph and I hear him punch it. By the time I see this and pin it, he is at my door. To my surpise, all through first gear he was pulling on me. I hit second gear and he stopped pulling on me, then I started slowly creeping away from him and we let off. I thought it would have been the other way around-lol


Close races are the best
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Old Jun 3, 2005 | 08:16 PM
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From: Milan, MI
Car: 1999 Z28
Engine: LS1
Transmission: A4
good run! those PI stangs run pretty good with 5 spds, and with exhaust, gears, and tires, wake up very well, like most stangs.
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Old Jun 4, 2005 | 12:40 AM
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Car: 1988 IROC-Z
Engine: 427 SBC
Transmission: ProBuilt 700R4
Axle/Gears: Moser 12 Bolt / 3.73 TrueTrac
Originally posted by Jgolden314
good run! those PI stangs run pretty good with 5 spds, and with exhaust, gears, and tires, wake up very well, like most stangs.

Yea, I know he had def had exhaust. But didn't chat with him. I never had a car pull on me in 1st gear before
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Old Jun 4, 2005 | 02:14 PM
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From: Milan, MI
Car: 1999 Z28
Engine: LS1
Transmission: A4
Wish that was true for me as well, but pullin 2.3 short times, and having no top end at all, im pretty much screwed.
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Old Jun 4, 2005 | 04:24 PM
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From: Louisville, KY
Car: 92 Mustang Coupe/89 Camaro RS
Engine: 5.0 carb'd/305
Transmission: T5/T5
Axle/Gears: 3.73 and stock TrakLok/stock GM
The PI Mustangs AKA 99-04 GT/Mach 1's/Bullitts really get to speed well. Stock they run 14.3's-13.9's based on driver skill. theres a local guy here with 4.30 gears, full exhaust, pullies and a NX 100 shot running 8.4's in the 1/8th with some tire spin....He wont hit the button on the slicks, fraid his rear end might go bye-bye lol.
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Old Jun 11, 2005 | 11:28 PM
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From: Chico/Antioch California
Car: 1989 iroc Z Hardtop
Engine: 350 tpi
Transmission: 700r4
the newer gts all have fake hood scoops... good looking but such a waste... all they do is f uck up the aerodynamics
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Old Jun 12, 2005 | 12:33 AM
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From: Cincinnati area
Car: 1988 Iroc-Z / 1992 RS
Engine: 5.7 TPI / L03 TBI
Transmission: 700r-4 / 700r-4
Axle/Gears: 9 bolt 2.77 posi / 10 bolt 2.73
IROCThe5.7L: 2.77 rear gears or 3.23?
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Old Jun 12, 2005 | 03:25 AM
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IROCThe5.7L's Avatar
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Car: 1988 IROC-Z
Engine: 427 SBC
Transmission: ProBuilt 700R4
Axle/Gears: Moser 12 Bolt / 3.73 TrueTrac
Originally posted by Mylilbowtie
IROCThe5.7L: 2.77 rear gears or 3.23?
As far as I know 2.77's. The car came with 2.77's but I never pulled the cover to check for myself.
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Old Jun 12, 2005 | 12:16 PM
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From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
your racing that beautiful car??? LOL j/k

you can tell what gears you have by checking rpm at a certain mph......then go here http://www.geocities.com/MotorCity/Pit/5755/math.html

and scroll down to the formula for mph and rpm to plug in some numbers to see what you have.

and i do find it hard for alot of cars out there to pull on a L98 in first gear......700r4 has a deep first gear and it really pulls nicely
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Old Jun 12, 2005 | 04:41 PM
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Car: 1988 IROC-Z
Engine: 427 SBC
Transmission: ProBuilt 700R4
Axle/Gears: Moser 12 Bolt / 3.73 TrueTrac
Originally posted by Orr89RocZ
your racing that beautiful car??? LOL j/k

you can tell what gears you have by checking rpm at a certain mph......then go here http://www.geocities.com/MotorCity/Pit/5755/math.html

and scroll down to the formula for mph and rpm to plug in some numbers to see what you have.

and i do find it hard for alot of cars out there to pull on a L98 in first gear......700r4 has a deep first gear and it really pulls nicely

You only live once, gotta enjoy the car It's a garage queen anyway, gotta clean her out once in a while

If I recall correctly, I am at 2k @70mph. I'll have to check again, I tested that a long time ago.
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Old Jun 12, 2005 | 07:44 PM
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Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
yep, 2k at 70 is about where i am at

and your right, every once in a while you need to feed some speed thru your ride! LOL
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Old Jun 16, 2005 | 03:56 AM
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From: Tampa Florida
Car: 85 Berlinetta F41
Engine: 355
Transmission: TH700
Axle/Gears: 3.73 posi
Wow 2k would be sweet... im probably at 3500 at 70- 75 ish.. havent changed the speedo gear yet thats with 3.73s and no converter lock-up. whats funny is with light throtle i hit OD at 40-45 lol.
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