Update: Just found out there is something called a RPO Code!!

Regular Production Option - Wikipedia

en.wikipedia.org

 

In short it's a legit police package be it 9C1 or 9C3 code. I have a fmr Wright Co. detective spec with the floor shift and this oddball speedometer cluster, 140 mph certified clock in a 6-gauge and the LS package fog light front with the SURV MODE switch. The fogs were filled with Whelen strobes and everything was run thru a FS smart siren stuffed in the center console. I used to build undercover cars when I was at TCSC St.Paul and have seen many of these, they were very popular with DEA, (then) INS, even the IRS had unmarked cars. Anyone ever see a Chevy celebrity undercover? They were fun...

 

In short it's a legit police package be it 9C1 or 9C3 code. ...

Just got the build sheet today. It's weird I do see a 9C3 it under SEO vehicle. And I see a WL9, described as a "MODEL CONVERSION POLICE CAR" I'm mostly looking for the better brakes, extra cooling, and bigger engine for towing.

2013 Impala Police, 51K, Blk, build sheet.pdf on GDrive

 

Cool, you are in the Twin Cities. I'm looking at both the Impala and Taurus police versions. They are both on one lot. One is plain/undercover, the other needs me to install a console myself.

I just joined, I'm not getting the abbreviation, TCSC is?

 

Don't buy the Taurus it has an internal water pump that fails and ruins the engine. Look up Duratec water pump failures 3.5 V6.

 

TCSC or Twin Cities Service Center was the Motorola depot on Transfer Road near the Amtrak station until Motorola dumped the RSC's and Bearcom bought it and moved to 2220 University. I was a company man until the Google split up of Motorola and now live north of the cities near Knife Lake.

Get the Impala, the police package Taurus looks like a rental car with an attitude.

 

9C3 is the real deal. Engine oil cooler and transmission fluid cooler, fat radiator and the trunk should have the battery power block on the passenger side. Look for a county property tag in the drivers door jam area near the hinge, most were stuck in there. Any plugged antenna holes on the roof or decklid? All emergency vehicles were equipped with an 800 MHz state ARMER system radio (Allied Radio Matrix for Emergency Responders) and that required an external antenna.

 

No holes that I can see. This one must have been for non-emergency use. I did find unconnected wiring harnesses under the hood and I saw a metal box on the floor of the trunk.

 

The carfax report says it was purchased in Hibbing, MN on 4/19/2013.

 

The 3.6L is essentially the same engine as in the civillian Impalas from 2012 on up, save for the extra coolers. There is no extra performance HP of the 9C1/9C3 vs the regular version. There might be some tranny shifting differences but it's still the same engine and transmission. If it came from the factory with the higher speed rated Goodyear Eagle tires, then it has the limiter removed. Should be good for about 149/150 MPH clean config down at sea level.

Page 10 and 11. & 44.

https://www.michigan.gov/documents/msp/VehicleTestBook2013-sm_406312_7.pdf

 

The 3.6L is essentially the same engine as in the civillian Impalas from 2012 on up, save for the extra coolers. There is no extra performance HP of the 9C1/9C3 vs the regular version. There might be some tranny shifting differences but it's still the same engine and transmission. If it came from the factory with the higher speed rated Goodyear Eagle tires, then it has the limiter removed. Should be good for about 149/150 MPH clean config down at sea level

Regarding the drivetrain, The tranny is 6 speed and the manufacturer is General Motors with a code of 2080 : 6T70
Yes, the one I'm looking at does have Goodyear Eagle tires. I have no desire to go 150 mph though.

Page 10 and 11. & 44.

https://www.michigan.gov/documents/msp/VehicleTestBook2013-sm_406312_7.pdf

Thanks for the reference, very cool book. I want that job, where you drive police type cars around all day and write down what you find.

 

No this is the oddball speedometer cluster, certified clock in a 6-gauge that is a factory piece.

This is the control head layout of my MCS-2000 radio stack.

 

No this is the oddball speedometer cluster, certified clock in a 6-gauge that is a factory piece.
View attachment 165192

I like this 'odd' cluster way better then what I assume is the current stock one. At least I can read it.

 

The usual suspect in its native habitat

Couldn't edit the last post to include the image...

 

USA! USA! USA! Do you really live in the state of Chevrolet?


Really, that's a nice color. Not red and and not all the way purple.

 

Update! Didn't buy this 'pala. too bad for me. ;-)

 

I've seen a few with trashed bottom ends, what a stoopid @.. design. I get it Ford had their reasons for putting the coolant pump in the timing cover but this smacks of engineering arrogance to believe the pump seals would never fail and damage/destroy the engine and in a police duty vehicle of all things. Not every department swaps out their cruisers at 100K miles and not every pump is going to make the rated MTBF, jeopardizing an officers life or allowing a dangerous driver to potentially get away because the coolant pump failed during a pursuit seems like a really poor compromise to saving some underhood space. I've driven that Taurus PPV and it is one wicked fast b!^c# but all that speed means nothing when the bearing spin out.

 

You'd think the internal h2o pump lesson would've been learned from the 'ol Dodge Intrepid....

 

Exactly no exscuses everyone saw what the 2.7 V6 Chrysler engine did !

 

We have to keep this in perspective and know this is an off-brand product with a four letter word for a brand name that somehow migrated from the MoPar engineering world. I'm not saying the Duntov designed Chevrolet V8 is perfect but they managed to outsell the Ford 302 smallblock by a 3:1 margin despite Ford coming out with the flathead over a decade earlier. How many Ford V6 variations have come & gone during the production of the GM 3800 V6 engine that traces its roots back to the early 1960s? Guess we know who made the better mousetrap.

 

The 9C1 and 9C4 can be located in the trunk under the carpets on the right. Lift up the carpet on the right side and you will see a sticker with a bunch of different codes. It will be close to the bottom of codes. Also you can look up your vin number online and it will tell you if it was a police vehicle. As for the people saying there isn't a power difference, they got their brains as a prize in a serial box. There is a major power difference. My police impala is extremely quick. It pins me to my seats. I've had an Impala before but a regular one and my cousin had one also a regular Impala. Neither of them have the power that my police impala has. Now impalas in general have decent power but the police models are more powerful.

 

Before you go insulting people you may want to do some research. The engine and hp is the exact same. It has other upgrades but no the police model does not have any more power than the 3.6 civilian model.

 

Even the previous engine with the 9C1 package has the exact same hp as the civilian model. Not trying to flame you but coming in insulting people as newbie with facts that are just flat out wrong isn't a great start just saying.

 

Police package had a different final ratio at various times and just because it's horsepower and torque is the same as the civilian doesn't mean it's tuned the same. I've built many police cars over the years and can tell you they have more bite in the backside than the standard production cars with the same engine.

 

Yes I understand that but thats not what was being said. If you read back I said they had plenty of other changes, but more power was not one of them. Thats all.

 

I've seen several Police RPO's for speed-governor (rpm redline) and several dash packages (parameter tweaks) some are GM and some are ACDelco. These are in addition to basic 9C1 9C3 codes. Certainly aftermarket packages get added locally.

The potential unharnessed power for just oem packages would easily add 50+ hp and parameter tweaks would easily spread the powerband. And then there's local PD transmission tweaks.

I don't believe GM discloses the power increases. Heck its proven over nearly a hundred years of de-rating to keep government off their backs.

I remember we could bring home a car with a 350sb 2v carb and in a couple hours set a big 4v manifold and tweak the timing and the thing would be wild on the streets with rubber burning power. That particular motor could pound out nearly 100hp more with only that.

Ya just can't ever be sure.

 

Other factors to a police spec are what's not included in the package that normally weigh down the civilian model.

I do have the ECM profiles for the Gen-7 9C1 and standard L36 builds and the only differences here are the top speed limiter, some transmission shift schedule changes and engagement points of the cooling fans. The final drive of the police package was higher than the civilian spec, top speed was capped at 135 however due to the limits of the tires... lawyers. A slick-top Impala without a side spot will do about 145 unlimited if you have the real estate, this has been tested & confirmed by myself and others with the appropriate software and interface.

If Griz can figure out a way to get a Quadrajet on my 3800 without making a mess of my driveway with the empty beer cans I'm game!

 

. . . why not try a 6-pack and shaker? 😊

Adding: ref quadrajet

 

Suppose I could but instead I got the final drive ratios used for the police package and they use a 3.29 final while the civilian uses a 3.05 thus giving them a quicker "feel" at the expense of a higher overall engine speed.