I want to remove the govenor from my 1993 lumina euro 3.1L. Any help would be much appreciated.

It is part of the ECM programming, not an actual physical part that can be removed. Powertrain controller or PROM upgrade would be required. Try Summit Racing.

What does the Lumina shutdown at?!?! I didn't know that it had a govenor on it.

Everything with computer control has a governed top speed. I don't know what it is on the Lumina, but I can tell you it is higher than 120 mph:naughty:

mine is at 110 mph

My wife and I had a 91 Lumina, I got clocked once, luckly by a friend with a radar gun and got it to 130MPH

My friend's V6 Cavalier RS laid down at 124, my Impala SS was still pulling hard at 138 (ran outta road, supposed to be limited to 145), my other friend's 9C1 police Caprice hit the wall at 155(!) with performance chip. I've yet to hit the top on the Lumina. I'll get back to you after Sunday's morning romp!

I'm gonna take a guess and say 105 with that lumina providing its stock, thats what mine hits.

With a base model car the limiter would be at ~112, because of the tires. If your car came with better tires than the base model it may be higher.

With a base model car the limiter would be at ~112, because of the tires. If your car came with better tires than the base model it may be higher.

Mine's an LS-don't know if that might make a difference. Did come with speed-rated tires. My top speed so far has been running down a slight downgrade, but I didn't feel the governor backing the motor off. Like I said, I'll do some more research Sunday, and get back to you.:naughty:

Update: I did have the friend with the 9C1 chase me Sunday, and according to his speedo, I topped at about 122, on flat highway, before hitting the "wall". My speedo only goes to 115, so it was meaningless.

We got some funny looks, they thought a high-speed chase was in progress, probably.:evillol: I told him to turn on his wig/wags and strobes, but he's scared to use 'em.:lol:

pretty much all GM cars not called camaro, transmaro, covette have ECM shutoff at 96mph. the Z34 models (and equiv) had 104mph.

the fact that your speedo says something else is.....too bad. ITs fantasy.

btw, the factory 9c1 ANYTHING was drag limited at 118mph IIRC. Its only 260hp, its only pulling 2 tons (without driver), it only has the aerodynamics of a storage shed.

Well then, I guess I ought to go fight my speeding ticket on the grounds that my car cannot go that fast.

Somehow I don't think the cop who gave me the ticket will believe that.

pretty much all GM cars not called camaro, transmaro, covette have ECM shutoff at 96mph. the Z34 models (and equiv) had 104mph.

the fact that your speedo says something else is.....too bad. ITs fantasy.

btw, the factory 9c1 ANYTHING was drag limited at 118mph IIRC. Its only 260hp, its only pulling 2 tons (without driver), it only has the aerodynamics of a storage shed.

Talk about fantasy. This is total bullshit. Where'd you get those figures? I can tell you with utmost certainty that a 94 Impala SS will top 140, the 9C1 being the same car, with different gearing, tire size, AND a chip is capable of more. Be glad to prove it if you are in the St Louis area.

I have seen a figure close to what you stated as the max speed WITH overhead light bar, but that was per the lightbar manufacturer. The 9C1 comes with a sticker on the dash that states,"Use overdrive position for pursuit in excess of 120 mph" or something to that effect.

http://www.impalasuperstore.com/naisso/superstore40/storepics/140v2.jpg


:iceslolan:naughty::lol2::rofl::lol:

Before the current Impala, Chevrolet offered their lowly Lumina as a police vehicle after the demise of the Caprice. However, the Lumina never took off with departments and buyers flocked to Ford's camp. The '96 and earlier rear-driven Caprice is regarded by most officers as the best police sedan there ever was, and most insist on using their older Caprice cruisers to this day. It came in two versions - a 4.3L 200 hp V8 and a 5.7L 260 hp V8. Yes, the 5.7L is a cop version of the legendary Impala SS of the mid-'90s. The 5.7L Caprice does 0-60 mph in 8 seconds, brakes from 60 mph to 0 in 135 feet and has a top speed of 139 mph. The 4.3L is considerably slower, reaching 60 mph in 10.5 seconds and having a top speed of 120 mph.

The late '80s 9C1 Caprice was also this market segment's leader in its time and was also regarded as the best police cruiser ever, until the release of the '90s Caprice.

http://www.modernracer.com/features/chevroletimpalacopfront2.jpg

pretty much all GM cars not called camaro, transmaro, covette have ECM shutoff at 96mph. the Z34 models (and equiv) had 104mph.

the fact that your speedo says something else is.....too bad. ITs fantasy.

btw, the factory 9c1 ANYTHING was drag limited at 118mph IIRC. Its only 260hp, its only pulling 2 tons (without driver), it only has the aerodynamics of a storage shed.

Do you even own a car? Anyone who has ever driven a rear-drive, V8 powered sedan can tell you that they will breeze past 120 with ease. Drag limited:screwy:? Been in a 3.1 V6 Cavalier when the ECM cut it at 124(indicated) Being no stranger to high speed, that felt correct to me. The SS Impala was still accelerating strongly past 135, but I ran outta blacktop and had to bring her down. The '94 had a digital speedo, so I don't think mechanical error was any issue.

P.S. The Impala SS will do in excess of 100 mph without being in the overdrive range, still well below redline.

P.S. The Impala SS will do in excess of 100 mph without being in the overdrive range, still well below redline.

Ummm jeff? Im gonna answer your previous few posts with just one.

First off, the only real way to tell how fast you went is to time or measure the car, which you didnt do. Which no one here reading did.

The T code J cars have the hp to do close to 120, but since they came with crap tires and were set up by the factory to grossly understeer to accomodate crappy drivers, the ECM fuel shut off (which did vary slightly year to year) was 96 (93 subird coupe with 3.1 5spd has a 102 shutoff, but only a few were made) If your speedometer reads 120, get a new speedometer.

Next, the next best way to get a better approximation of true speed is the VSS. But once again, u nor no one readingthis hooked up a scan tool and nailed it.

Next, No 60 series tranny (or 40 either) will EVER shift into 4th (OD) above 75% throttle, regardless of speed. by 60 series I mean the 4T60(e) or the 4L60(e) and the 4T40E. The 4L80E however will go into 4th with a 4.10 or better rearend and the diesel, which you or no one here even has.

As for V8 RWD sedans, I was owning and driving such vehicles AND V8 rwd coupes before you were born.

There is no formula, process, test, or magic you can perform to make the 9C1 caprice (which predates the Impala SS btw) do 140mph. At that speed it has over twice the aerodynamic drag of the camaro, 60 (or more) hp less and 700 (or more) lbs more. As you might recall from your college classes, the drag increases with the SQUARE of the speed, not learly, you cannot extrapolate a 160mph camero and figure 140 for the caprice.

The fastest production police car is not the chevy, but is the ford. It is set to run 130mph and carries a certified clock (which you cars do not) The ford is lighter, the PI package has more hp, and it punches a cleaner hole in the atmosphere.

As for the 4.3V8, its was never offered as part of a 9C1 package. Some depts had the 4.3 just as some had the H code 305 previously because they were local departments with limited jurisdiction. It is cheap and easy to add light bars to a base model car. And just because you buy a used cop car on ebay does not mean you even get the highway patrol models.

but if you disagree, you can always post the track slip

Never said the 4.3 came in a 9C1. Never said it was the fastest cop car. No way to get one topped out at a quarter mile track, so that suggestion is pointless. I'm only telling you what I know to be true. Take a look at the NAISSO web site. You seem very knowledgeable, but they have the product specs and actual tested performance for both SS and 9C1 models. Hell for that matter, I had a '58 Crysler Windsor with a small hemi that could bust 140. That thing had to weigh half again what the 9C1 does. You are giving me a bunch of book figures. Where do they come from? (curious) The Cavalier RS in question was late 80's vintage, and had the package with digital speedo, if that means anything. That being said, the car was wrecked in a way that the engine was damaged, a replacement 2.8 was not available, and a 3.1 was installed. 5 spd man gearbox. The only other thing I can offer is the word of a police officer friend I've known for years, has clocked both their 9C1's and Crown Vics for top speed with certified stationary radar, Found the Vics to be slightly faster in the top, their Caprices at about 134 (with over 100,000 miles), the Vics at 137.(new) I am not doubting that you are pretty sure of your figures, but I know what I know to be true. I MIGHT be able to get a video of such a radar test, if he could be pursuaded to repeat it. The 9C1 that my civilian friend owns is decidedly NOT stock, Not emissions compliant, is running performance chip, Flowmaster full system, and 3.08's, With 235/70/15's. Was a former Warrenton MO PD car. Bought it from the dept.

Are we talking about the same cars? They were 9C1's all the way through '96. If you were talking about the old boxy ones, I'd buy what you are saying. Had a '77 Caprice, 305, I don't think that one could pass 110.

I'm really wanting to believe you, or at least figure out where the difference in what you believe, and what I know, lies. I just got back from another round of "testing". I am blessed with 3 things at my disposal. A wonderful stretch of new highway, 5 lanes wide, with 70 mph limit, and very sparse enforcement, a very good radar detector, and a CB in the car (truckers are better early warning than detectors, they don't miss NOTHIN'). At this time of day, 80-85 mph is typical of most of the cars out there. I wound it up again, and though I do have to report a wierd gag right as it crossed the century mark, (which I believe was an aborted attempt to shift outta overdrive) once past, it pulled strong all the way to the limiter, at which point the speedo was out of range. The speed at which I was passing the other cars was consistant with what I would expect from passing stationary objects at 40 mph or so, therefore the "seat of the pants" assessment is that the indication was probably close to correct. The tires are new, and of the O.E. size and type. The times that I have passed the stationary radar displays that the cops put out on the road, my reading has had no discernable variation from the speed indicated by the CERTIFIED stationary radar, even up to as high as 85 mph. My family owns a speedo and dash repair business that has been around since the 30's. My uncle's work van has a digital readout like that used by the police remotes, that is linked to the van's certified speedo. This is a business tool, people who follow can see the discrepancy in their own speedo, and have the shop's name and number looking right at them at the time. Every time I've had the opportunity to follow him on the road, my reading was right in step with his. I have, therefore, very little doubt about the accuracy of my own gauge. This is all I can tell you about my certainty that what I am seeing is at least very close to correct. As far as your assertion that the OD's won't stay in above 75% throttle, when I did the top speed run in the SS, I watched the tach very closely, making sure it actually hit OD, and stayed in, not wanting to grenade the motor if a sudden downshift occured. As stated before, the Lumina did seem to attempt to initiate a downshift, but backing slightly out of the throttle quelled it. I cannot approximate throttle opening at that point, but at no point did I have it on the floor.

It flashed through my head that mine might have been set up different than some, as it is a '97 LS, but wears the LTZ spoiler from the factory, but I dunno. It would have to have the 3.8 if it was to have been some kind of police duty or something.