top speed govenor
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top speed govenor - 6/10/2007 5:42:29 PM
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xtrmblzr03
Posts: 1
Joined: 6/10/2007
Status: offline
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hey everyone..its my first post i drive a 2003 blazer xtreme.. i was just wandering how to get rid of the top speed govenor.. or over ride it..comments will be helpful .. thank you
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RE: top speed govenor - 6/12/2007 12:24:44 PM
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Lee
Posts: 191
Joined: 2/18/2007
From: Hurlburt Field, FL
Status: offline
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I think it's limited by the computer, I'm not too sure though. I wanted to do it too, but then decided my current tickets are bad enough.
_____________________________
2004 Blazer Xtreme
Custom exhaust
Crappy Dual head unit
RF speakers in the front, Alpines in back
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RE: top speed govenor - 7/20/2007 8:34:49 PM
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blazermanxx
Posts: 42
Joined: 3/7/2006
Status: offline
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just a question sorta related to both above...what is your top speed right now. I travel to and from iowa city and chicago and in the middle of corn fiels i have my cruise control set on 100 and mine tops out at about 101-102 at 3000 rpm.
thanks
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~Greg
1995 Blazer, 4.3L, 4door 4x4, with 255's all around
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RE: top speed govenor - 7/21/2007 3:31:28 AM
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drperry
Posts: 3896
Joined: 1/12/2007
From: GP AB CA
Status: offline
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Look at the speed rating of your factory tires... It'll be close to that, lol.
But that's about the top speed of the average GM/Chevy truck/SUV
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RE: top speed govenor - 7/21/2007 7:32:47 AM
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BigGreenMonster
Posts: 401
Joined: 8/11/2006
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You can remove it with a Hypertech programmer, but you will have to run premium, and you will pick up about 20 more horsepower. But as already mentioned, you should check the speed rating of your tires. My friend's 96 4 door had a top speed about about 130mph (give or take) with the factory limiter removed. However, these trucks are a handful at high speeds, and will bite anyone in the ass who underestimates their chances of losing control of them.
The factory limiter should be in the area of 98-105mph depending on tire size, gears etc..
_____________________________
Don't tase me, bro!!!!!!!!
94 Blazer Tahoe w/ Vortec CPI- Flowmaster 40 series
'97 30th Anniversary Mercury Cougar XR-7
4.6 Modular V8 (no major modifications)
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RE: top speed govenor - 7/21/2007 12:48:38 PM
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drperry
Posts: 3896
Joined: 1/12/2007
From: GP AB CA
Status: offline
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The Hypertech does not remove the governor, you can change it, but not remove it... at least not on the programmer for the 2005 year of Blazer, you can raise it to 128 MPH
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RE: top speed govenor - 7/21/2007 2:48:19 PM
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BigGreenMonster
Posts: 401
Joined: 8/11/2006
Status: offline
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Dr Perry is correct, but for all intensive purposes, the governor is removed. Any higher than that would be suicide for your engine and tranny, perhaps you as well. Hypertech has a threshold for a reason
The vehicle driveline (specifically the drive shaft) has physical limitations as to how much centrifugal force it can withstand.When shafts break, they usually take a lot of things with it.
< Message edited by BigGreenMonster -- 7/21/2007 3:00:07 PM >
_____________________________
Don't tase me, bro!!!!!!!!
94 Blazer Tahoe w/ Vortec CPI- Flowmaster 40 series
'97 30th Anniversary Mercury Cougar XR-7
4.6 Modular V8 (no major modifications)
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RE: top speed govenor - 7/21/2007 3:19:54 PM
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drperry
Posts: 3896
Joined: 1/12/2007
From: GP AB CA
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I think I changed mine to 110MPH... if I changed it at all...
I know I limited the RPM to 5200, lol
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RE: top speed govenor - 7/21/2007 4:49:05 PM
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BigGreenMonster
Posts: 401
Joined: 8/11/2006
Status: offline
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I don't know too much about what the driveshafts in Blazers can take since I really have no desire to take them above highway speeds (for reasons obvious to anybody who has ever owned one). But I do recall the Hypertech programmer had a couple ones you could choose, the highest being somewhere around 130 ish.. As you pointed out, 128... I really don't see why anyone would want to go that fast in one of these. If you want to go fast, buy a car that is designed to be driven fast, not a truck that handles like a brick. My old 89 saw 110mph or so once or twice, its not an experience I'm in a hurry to repeat. If I want to stomp a rice rocket, I'll use my Mercury with sport IRS suspension.
< Message edited by BigGreenMonster -- 7/21/2007 4:51:09 PM >
_____________________________
Don't tase me, bro!!!!!!!!
94 Blazer Tahoe w/ Vortec CPI- Flowmaster 40 series
'97 30th Anniversary Mercury Cougar XR-7
4.6 Modular V8 (no major modifications)
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RE: top speed govenor - 7/24/2007 7:34:31 PM
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BrianMichaels1
Posts: 118
Joined: 3/16/2007
From: Dallas, TX
Status: offline
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My top speed is 96-97 at 2,800 RPM. I agree that it's not the safest feeling in the world to go that fast in a Blazer. However on my trip from Dallas to LA I used one entire tank of gas at a solid 95-97 MPH and it got me 18 MPG instead of my 28-29 MPG at 55 MPH. But hey that's something Arizona's good for. 
Don't plan on putting that much strain on my vecicle again though.
_____________________________
2000 Chevy Blazer LT 4X4 4-door
Resto projects:
1975 Toyota Celica GT
1974 Toyota Celica ST
1971 Chevy Nova, 307
1968 Chevy C20
1964 Volvo 122 Wagon
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RE: top speed govenor - 7/25/2007 11:48:55 AM
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BigGreenMonster
Posts: 401
Joined: 8/11/2006
Status: offline
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When I moved to Carlisle, (a 2 hour drive from my old home) The flow of traffic on I-81 moved around 80-85mph the whole way, I set the cruise and in O/D averaged almost 28mpg in my Cougar, and my car had barely enough room for me to ride in it with all the stuff I had.
_____________________________
Don't tase me, bro!!!!!!!!
94 Blazer Tahoe w/ Vortec CPI- Flowmaster 40 series
'97 30th Anniversary Mercury Cougar XR-7
4.6 Modular V8 (no major modifications)
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RE: top speed govenor - 7/26/2007 11:29:03 AM
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BrianMichaels1
Posts: 118
Joined: 3/16/2007
From: Dallas, TX
Status: offline
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Very nice. But I'm amazed and impressed that a 4,100 pound Blazer is capable of 29 MPG at any speed....let's see, at 80-85, I get 20-21 MPG in the Blazer. My Nova with the original 307 will get 19-20 MPG, but not the greatest "miles per quart of oil". I want a 307 in my Blazer.
_____________________________
2000 Chevy Blazer LT 4X4 4-door
Resto projects:
1975 Toyota Celica GT
1974 Toyota Celica ST
1971 Chevy Nova, 307
1968 Chevy C20
1964 Volvo 122 Wagon
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