TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

Top speed?

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Old Jan 8, 2002 | 10:26 PM
  #1  
TZFBird's Avatar
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From: Lincoln, Nebraska
Car: 1988 Firebird, 2000 GTP
Engine: 327
Transmission: 700R4
Axle/Gears: 9" posi, 4.11
Top speed?

What is the governer set at on our TBI 305 cars? I have an 88, if that makes any difference. Is it higher, or lower than 100? I guess there is only one way for me to find out, but it would be a little easier for someone to just tell me.
Thanks
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Old Jan 8, 2002 | 10:39 PM
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CODY BEHNKE's Avatar
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From: NEBRASKA
It should be at 110mph
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Old Jan 9, 2002 | 12:21 AM
  #3  
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From: Lowell, MA
Car: 89 Camaro RS
Engine: sbc 400
Transmission: th350
i swear i hit 120 one time, but i think my gauge was a bit off. i think its around 105-115
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Old Jan 9, 2002 | 12:55 AM
  #4  
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Car: 91 Red Sled
Axle/Gears: 10bolt Richmond 3.73 Torsen
AXKS eprom has it set at 108 and 106 resume. It's around 110
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Old Jan 9, 2002 | 01:40 AM
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From: Eastpointe, MI
I heard that Camaros Make it up to 128MPH or something..
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Old Jan 9, 2002 | 07:13 AM
  #6  
91Firecrow305TBI's Avatar
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From: Hampton, Va, USA
The speed limiter is set to 115mph on Base Firebird/ Camaro RS models. I have pegged it many a time. Now I go right on by it with the new chip.
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Old Jan 9, 2002 | 12:30 PM
  #7  
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From: Lowell, MA
Car: 89 Camaro RS
Engine: sbc 400
Transmission: th350
oh, by the way, there is no need to get a chip to get rid of this limiter. there's a tech article on how to turn it off with just a simple radio shack switch
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Old Jan 9, 2002 | 12:31 PM
  #8  
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Car: 91 Red Sled
Axle/Gears: 10bolt Richmond 3.73 Torsen
Originally posted by 91Firecrow305TBI
The speed limiter is set to 115mph on Base Firebird/ Camaro RS models. I have pegged it many a time. Now I go right on by it with the new chip.
The ANTT bin has the 115 cut off and 110 resume that's with the auto. AXKW bin has the 108 and 106, that's with a stick. I don't have the other eproms to check but if you send me the other bin files I'll look.
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Old Jan 9, 2002 | 01:26 PM
  #9  
Z28 Boy's Avatar
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From: Charlotte, NC
Car: 1991 Camaro RS
Engine: GMPP 350 HO w/TBI
Transmission: 700R-4
Axle/Gears: 10-bolt w/3.73s
i am almost positive that i hit ~120 one time. i know that it "shouldn't" be possible, but i remember doing it. i didnt get a good look at the speedo though because i was too intent on making sure i didn't end up wearing my friend's jeep as a hood ornament. but i DO know that it was past the 115 and nearing about where the 120 should have been.

i could be wrong though.

-brian
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Old Jan 9, 2002 | 01:43 PM
  #10  
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From: Barboursville, WV
i had my 88 TBI well past the 115 mark...its an auto and it went past the 115 and pegged on the trip meter...and my rpms were still going up so i figured i was going faster...all this in 3rd gear...is 3rd convered or just 4th?
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