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86 IROC vs 84 Z28, who's gonna win?

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Old Jul 13, 2003 | 05:35 PM
  #1  
eatmydust's Avatar
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From: Missouri
Car: 1986 IROC-Z28
Engine: 305 TPI
Transmission: 700R4
86 IROC vs 84 Z28, who's gonna win?

Friend from work just got his 84 Z runnin again. His tranny (700R4) went out and he got it rebuilt with a TCI shift kit in it. Other than that he's all stock. He's got a 305 H.O. My mods are in my sig. I'm pretty sure I got the win easy, but a few of my other friends think it'll be close.
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Old Jul 13, 2003 | 06:24 PM
  #2  
TTA 1387's Avatar
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From: Diamondhead, MS
Car: 89 20th Ann. TA
Engine: Turbo 3.8 V6
Transmission: 200 4R
Axle/Gears: 3.27
Tough call. I had an 84 HO 5spd and when my buddy bought a brand new 87 350 IROC, I used to beat him. I had a chip, 160 thermo, K&N, advanced the timing to 14 degrees, no cat, and took the charcoal ring out of the air filter housing.

Once he put a chip in and thermostat, it was whoever hit it first would stay there. It wasn't until he did the exhaust that he really started pulling on me.

Sorry for so long, should be a good race though.
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Old Jul 14, 2003 | 05:51 PM
  #3  
Nitrous Al's Avatar
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From: Massachusetts
Car: '90 Mercury Grand Marquis GS
Engine: 5.0L Ford V8
Transmission: AOD
Axle/Gears: 8.8" Ford, 3.08:1
Just race him and tell us how you make out.
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Old Jul 14, 2003 | 08:44 PM
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icebird_1981's Avatar
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From: Toronto
well both u stock run the same HP, but u have more mods then him but he does have a 5 speed, i am gunna say him if he could drive good, i could be wrong though, race him find out. good luck!
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Old Jul 14, 2003 | 11:35 PM
  #5  
Vicious 88 GTA's Avatar
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From: Rio grande Valley, Texas
the 86 Iroc's got crappy cams, and you both have the same power but I believe his 3.73's will help him alot with a 5 speed, i think whoever can hook up better will take it, both cars are probably mid to mid high15's - AARON
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Old Jul 15, 2003 | 02:17 AM
  #6  
screaminformula's Avatar
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From: Montgomery, AL...for now
Car: 1987 F150...PAAARTY FOUL!
Engine: 300 I6 stump pullin sumbiscuit
Transmission: 4 speed grind box
Axle/Gears: 3.55 unlimited slip differential
how are ya'll gettin a 5-speed? he CLEARLY said his tranny (700R4) went out and it was rebuilt with a TCI shift kit in it...i think the TPI is gonna own because of the TPI's low end torquiness. gotta love that long-tube runner design for low end torque...


Josh
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Old Jul 15, 2003 | 05:47 AM
  #7  
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From: Toronto
oh crap my bad i must have got mixed up beause TTA 1387
said he raced in a 5 speed, lol Vicious 88 GTA must have done the same thing. sry my bad, that chnges alot. but its still gunna be a close race.

Last edited by icebird_1981; Jul 15, 2003 at 05:59 AM.
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Old Jul 15, 2003 | 06:10 AM
  #8  
Mad-Mic's Avatar
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From: Annapolis MD
Car: 87 Vette 85 TA 82 Z/28
Engine: 3 - 350's 388 400
Transmission: 2-700R4's 1 T56 Setup!
Axle/Gears: 2.59's 3.42's 3.73's
i say first one out of the hole will win. but i give the edge to you with the TPI. do the TB Bypass and you'll pick up a few more ponies. with all the mods you have the only ones that will really be effective is 3.23 Posi, Ported Plenum, Gutted Airboxs, Summit Exhaust Cut-out. the suspension mods won't do nothing in a drag race till you start getting up in hp. 100 or so hp and those mods will be effective. as of now you got that part taken care of it looks like!

launch and let the torque do it for you! with your 3.23 posi you should edge him out especially if he has a 2.73 rear.

good luck and let us know!
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Old Jul 16, 2003 | 06:00 PM
  #9  
eatmydust's Avatar
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From: Missouri
Car: 1986 IROC-Z28
Engine: 305 TPI
Transmission: 700R4
So not even my torque arm or lca's and relocation brakets will help me out? Damn, I thought they were for better launches.
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Old Jul 16, 2003 | 06:10 PM
  #10  
BrandenCali's Avatar
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Ya

Originally posted by eatmydust
So not even my torque arm or lca's and relocation brakets will help me out? Damn, I thought they were for better launches.
That will help you out a lot, meaning you should take him out of the hole. But if your trans is not to par like his he could still take you even if he has 2:73's
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Old Jul 17, 2003 | 05:35 PM
  #11  
eatmydust's Avatar
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From: Missouri
Car: 1986 IROC-Z28
Engine: 305 TPI
Transmission: 700R4
Well my tranny was just rebuilt 3000 miles ago, but no shift kit or stall.
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Old Jul 17, 2003 | 06:28 PM
  #12  
BrandenCali's Avatar
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Really

Originally posted by eatmydust
Well my tranny was just rebuilt 3000 miles ago, but no shift kit or stall.
Well some times when a shop rebuilds a trans they use new springs in the Sk either a brand you never heard of or some thing popular. Most likely if the trans had metal in the pan and always in a rebuild they disamble the valve body clean it up make sure there is no Burrs on any of the parts, and they put it back together. But you don't know what you got your old orignal stuff or some thing diffrent. But of course a Full shift kit is more than the springs in the valve body. Boost valves servo's acumaltor springs and so on.. As for a Stall you don't need one yet your still a stock 305 still right? A o.k converter for a replacement at a shop is the heavy duty 4l60 converter if you don't buy a $600 converter etc.
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