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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

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Old Apr 8, 2009 | 03:28 PM
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Default Top speed questions
Im sure alot will laugh, but I just wanna make sure on this. If im right, my 96 trans am shouldn't be speed limited to 85MPH right? The guy i got the car from gave me a crazy story about his wife telling him either it had to have a 85 mph speed limiter or he had to sell it. I figured he was just bluffing or BSing, but it looks to be true, because it sure shuts down at 85.
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Old Apr 8, 2009 | 03:35 PM
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hmmmmm sounds like the fuel is being cut off... If anything it should be 110mph NOT 85
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Old Apr 8, 2009 | 03:45 PM
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maybe someone installed a hypertech on it and set the speed limiter at 85 but never uninstalled it
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Old Apr 8, 2009 | 03:53 PM
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IDK, other than that the car is strong, im checking with a buddy at the dealership, we are going to try to flash it with a stock PCM calibration.
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Old Apr 8, 2009 | 03:54 PM
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Originally Posted by djjab57
maybe someone installed a hypertech on it and set the speed limiter at 85 but never uninstalled it
Mythoughts also. Its gotta be reprogrammed.
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Old Apr 8, 2009 | 04:05 PM
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Someone more than likely set it at 85. Get it re tuned. Tell that guy to start wearing the pants in his house and not his wife.
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Old Apr 8, 2009 | 04:11 PM
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When i got my car there was a hypertech with it. after a trans rebuild and gear change I took it to Bryan's house ( PCMforless) and he cleared the hypertech and said it had been set at 110.
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Old Apr 8, 2009 | 04:23 PM
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if your cars didnt come with Z rated tires, they are all set at 110 from the factory. Even v6s were at 118
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Old Apr 8, 2009 | 04:25 PM
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v6s can go 118? lawl
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Old Apr 8, 2009 | 04:36 PM
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Mine runs 150 with no problem. Never new they had govoners to begain with.
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Old Apr 8, 2009 | 06:19 PM
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Originally Posted by AChotrod
if your cars didnt come with Z rated tires, they are all set at 110 from the factory. Even v6s were at 118
My old V6 wouldn't do 118. It'd shut off at 110. I could probably hit 150 in the Z28 before the old sixxer could hit the limiter though. lol. Damn shitty 3.4.
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Old Apr 8, 2009 | 06:24 PM
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Technically even the cars that cam equipped with z-rated tires had a speed limiter from the factory...only it was populated with 255mph.
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Old Apr 8, 2009 | 07:13 PM
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Any programmer can set the speed limit, not just the Hypertech.
Setting it back to factory should clear whatever tune is in it.
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Old Apr 8, 2009 | 10:04 PM
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Originally Posted by bombebomb
Tell that guy to start wearing the pants in his house and not his wife.
Yes, exactly. I can't believe anyone would do that. I thought you were going to say the guy had it governed at 85 for his 16 year old kid.
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Old Apr 8, 2009 | 10:07 PM
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If you remove the speed limiter or set it at stock you should be able to get up to 120 pretty easy on a stock setup. Anyone with mild bolt ons and a tune should be able to get up to 150.
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Old Apr 8, 2009 | 10:36 PM
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Originally Posted by camerory
If you remove the speed limiter or set it at stock you should be able to get up to 120 pretty easy on a stock setup. Anyone with mild bolt ons and a tune should be able to get up to 150.
I think they do 150 bone stock.
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Old Apr 8, 2009 | 10:55 PM
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mine went past the 150 mark and was still going. Doubt it was really pulling anymore but it was still increasing in rpm's. Maybe mine is just a freak car
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Old Apr 9, 2009 | 09:58 AM
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mine did 164 bone stock, now that i have exhaust i am going to try again
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Old Apr 9, 2009 | 10:21 AM
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Yea, my I/E vert did 120mph the first day I had it, and I wasn't even close to asking for all it had - 300bhp will get you to 150mph in any car with reasonable aerodynamics.
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Old Apr 9, 2009 | 11:08 AM
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I go so fast that my speedometer gets into a sword fight with my voltmeter!
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