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Worst Running Thirdgen on the Board

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Old Sep 19, 2002 | 01:06 PM
  #1  
Matt86t/a's Avatar
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From: Hillsborough, NJ and SJU in Philly
Worst Running Thirdgen on the Board

Sorry to all you competitors of my title, but i definately have the WORST running thirdgen. Well actually it runs fine. Idle doesn't move all around and all that, it just is really out of tune. Most out of tune thirdgen maybe? Well, it does need a rebuild and it had puzzled everyone that ever looked at my sig. "16.45! That should be the stock time! WTF? You have all that work done too? Did you do it wrong? Seriously WTF???" So i decided that i have a bad engine/tranny/gears. Well, oh well. I'm just going to put more work into it. Maybe after $5,000 that would normally get a 305 into the 14's, i might be able to hit a high 15. We'll see.
Any suggestions?
~Matt
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Old Sep 19, 2002 | 01:47 PM
  #2  
Christos's Avatar
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From: Littleton, CO
Car: 1986 Iroc Camaro
Engine: 305 TPI
Transmission: Th700R4 Jr. Raptor
Have you done a compression check?

Just curious. My 305 TPI isn't too fast really. My friends 2001 V6 golf GTI (180 horses, about a 16.0 1/4) was able to pull on me a bit, maybe a car length at the end of a 1/4 mile.

I did finally replace my transmission, and the car feels and drives ten times as good, and as a bonus, it actually shifts down into 1st gear when i hit about 6-8 mph. (old tranny never did that, i realized)

So a slipping tranny can also hurt times too im sure.
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Old Sep 19, 2002 | 02:45 PM
  #3  
87WS6's Avatar
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From: Texas
Car: 1992 Formula Firebird
Engine: 305CID (LB9)
Transmission: World Class T5
Axle/Gears: 10-bolt, 4.10 gears
My thirdgen is pretty much stock. It has new exhaust and that's about it. The damn thing is pretty quick.
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Old Sep 19, 2002 | 02:55 PM
  #4  
FruityOne's Avatar
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From: Elk Grove Village, IL
Car: 1989 TransAm GTA
Engine: One sweet modified 355 TPI.
Transmission: The kind that shifts....
Does a "running" third gen count if it can start? Cause I may have the worst then. My uncle decided to tinker with it and I think he just destroyed it. He's only had it at his house for a day now!

*grumbles about not having all the tools to work on his own car.*
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Old Sep 19, 2002 | 10:51 PM
  #5  
Matt86t/a's Avatar
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From: Hillsborough, NJ and SJU in Philly
well Christos, i hope to rebuild my tranny and engine by the time spring break is over, and maybe i'll be a bit faster. The car has to RUN to be considered running. If it just starts and then stalls, and it doesn't count. Sorry.

~Matt
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Old Sep 20, 2002 | 07:15 AM
  #6  
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
16.1@84mph out of a built TPI 355. I win.
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Old Sep 20, 2002 | 09:02 AM
  #7  
FyreLance's Avatar
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Joined: Mar 2002
Posts: 3,445
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From: Huber Heights, OH
Car: 00 TA, 91 Formula, 89 RS
Engine: LS1 / 305 / 2.8, respectively
Transmission: T-56 / auto / auto
I'm blowing black smoke everywhere and have horrible exhaust fumes that make me wreak after driving around the block, and am getting gallons to the mile.
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Old Sep 20, 2002 | 09:06 AM
  #8  
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From: Addison. Il
i got 15.6's out of my built 357
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Old Sep 20, 2002 | 09:18 AM
  #9  
Matt86t/a's Avatar
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From: Hillsborough, NJ and SJU in Philly
that's pretty bad Jim and Fyrelance and Fattie. I don't know. My car runs perfect, it's just not fast. It will run for hours fine and everything but there's no power. Maybe worst running 305?

~Matt
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Old Sep 20, 2002 | 10:27 AM
  #10  
curt86iroc's Avatar
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From: Hillsborough, NJ
Car: 1990 IROC
Engine: L98
Transmission: TH700-R4
matt, you beat me by a 1/10 in the 1/4...



but we all know why.......(sig).....
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Old Sep 20, 2002 | 10:57 AM
  #11  
87WS6's Avatar
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From: Texas
Car: 1992 Formula Firebird
Engine: 305CID (LB9)
Transmission: World Class T5
Axle/Gears: 10-bolt, 4.10 gears
No matter how much I love performance I will *NEVER* delete my AC. I just thought I would add that.
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Old Sep 20, 2002 | 12:47 PM
  #12  
Matt86t/a's Avatar
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From: Hillsborough, NJ and SJU in Philly
that's because you live in Texas

:hail: to NJ seasons

~Matt
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Old Sep 20, 2002 | 01:37 PM
  #13  
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
I took my stock LG4, with 124k miles on it, from 17.65 1st run (bad fuel pump) to 16.80 tweeked out. Don't forget the altitude; at sea level those would be 16.37 & 15.58 (altitude factor is .9276 for 5800'). Things that were changed along the way: Fuel pump (stock replacement, that alone got me to 17.2's), air cleaner (open element), rods, hanger, emptying trunk, tire pressure, ignition timing, intake manifold. I guess I should mention that I started out with a 2-3/4" GTA take-off cat-back.

Oh, I'm still using that same replacement fuel pump and rods & hanger in the current configuration. Engine (shortblock) & tranny have 152k miles on them now.

The high mileage on your car isn't helping you any. But, improvements can be had by doing the "little things".
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Old Sep 20, 2002 | 01:40 PM
  #14  
TBI305Camaro's Avatar
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From: Barboursville, WV
AC is so nice I miss it. I took mine out last winter because it didnt really work anyways. I really missed it this summer when it was 100 degrees outside. Oh well it wasnt to bad at night and plus summer is about over....BRING THE SNOW.
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Old Sep 20, 2002 | 02:03 PM
  #15  
flyway190's Avatar
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Joined: Dec 2001
Posts: 653
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From: Dallas, TX
My old 305 (190k miles) with the mods listed in my sig except for the fuel pump and the intake manifold ran a best of 17.0 at 300 ft. above sea level. I'm starting to think that my transmission may be part of it.
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