2004 Mercury Grand Marquis - Performance Mods & Exhaust 

How can I join the grand marquis gang? I have 2008 model in KSA.

يقصد انه شرا السياره. مو فريق تدخله​@@zeninzavahir384

would be nice to see a POV drive

@@Luhinzzy POV drive? How do you mean?

@Socoolds455 I think he means from the driver's point of view using something like a helmet cam. Then you could see the gauges, speed, tachometer etc as you drive. Probably would be cool to watch.

One more thing does your car have this interior?? ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-EjwzzHiPy0Y.html

Pretty much the same style, but lighter grey, and cloth seats.

This version of the car had OBX mufflers, which were an S-tube Magnaflow type design. The car is since on version 3 of exhaust lol.

So, I made a mistake in the video, it's actually an Auburn Pro Series limited slip. I really enjoy it and has held up to the additional abuse now that the car is much more heavily modified. They're not cheap, but definitely worth the money!

It was a NOS trunk facia piece from a P71, it all swaps over, you just have to shim the trunk lock.

I used self adhesive vinyl it worked pretty well, if I were to do it again though, I'd probably pull the trim off the car, paint it, then reapply it.

Gotcha. It’s nice man. Can’t wait to upgrade mine

Thanks! The car has changed a whole bunch since this video, be sure to check out my newer videos too! The lip is just a Mustang Mach 1 front lip, I got mine from American Muscle, but there are a ton of places to get them including on EBay and Amazon.

I eventually went with a set of custom grind cams from Todd Warren at Apocalypse Performance. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-2XoErbOQzso.html

@@Socoolds455 Very cool thank you. I will check out Apocalypse

@@gordonstarship Todd Warren is hand's down the best, he'll have a conversation with you about all your current mods and future goals with the car and spec a cam for you based on that.

American Muscle GT500 replicas, 19x9 front, 19x10 rear (going 18's in the future because tire selection sucks lol), backspacing for a 2005-09 Mustang is also correct for a 2003-11 Panther.

Marauder headlights are plug-n-play for any 2003-05 MGM, whether or not you like them with the factory chrome is your personal taste though!

I just shoot the videos on my i phone, nothing special!

Thanks! OBX Long tubes, “off-road” x pipe, OBX mufflers, full 2.5in exhaust. You used to be able to find the kit on eBay, but I think you have to order directly from OBX now…

@@Socoolds455 the way that thing sound tho sounds as if you had some work done to the engine itself…it is that really what’s these cars sound like with open exhaust like that? - maybe it’s the stall converter that’s giving that quick aggressive/responsive revv like that

Nope, just factory Marauder lights. They're a direct swap for a 03-05 MGM.

I deleted the PCV tubes, and I’m just running breathers on the valve covers (you could also run a catch can). The IAC now runs off the single (originally pcv) port on the intake tube. Of course the car is also tuned for this setup, since I’m running the 80mm MAF too.

@Socoolds455 ah I figured that's what you did. I just wanted to be sure. I just purchased an entire zip tube setup off of an 07 p71 complete with 80mm maf out a salvage yard for just 40 bucks for the entire thing. I was afraid I'd have to drill a hole but your solution sounds way better Thanks again! You got yourself a subscriber!

You have to use a p71 zip tube from a 2004 cvpi, it the only year with both iac and valve cover port, that's what i have on mine.

It’s a Mach 1 Mustang chin spoiler, you can get them in a few places, relatively inexpensive too. Mine, if I remember, came from American Muscle.

I’m guessing you meant PCV, that’s what runs from the valve covers. Here is a video of my current setup and how I did it ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-PI-1zlsyEl8.htmlsi=KKBAJI4Ryk36wLgn

@@Socoolds455 I see. I ended up running a filter like the blue one on the other side since the tube I had was from an 06+ p71 so it didn’t have 2 ports. Honestly didn’t wanna risk any issues that might’ve caused so I just stuck with the stock tube

Price is going to depend on what brand gears you get, and where you get them from, the major speed shops like summit and Jegs will have several options. Plus whatever labor costs to put them in, if you’re not doing it yourself. Any good transmission shop familiar with the Ford 4R70W or 4R75W would be able to do a j-mod (it’s just drilling out certain holes and removing springs). However, if you Google it, there may be someone selling a pre j-modded valve body. Remember, gears require a tune to correct the speedometer. Good luck!

They're B body over-the-axle tails, for like a 94-96 Impalla SS. They're not an exact fit, but they're reasonably close.

@@Socoolds455 Thanks

Ath the time this was the full OBX exhaust kit, the wheels at the time are 19" 2010 GT500 replicas from American Muscle.

Once upon a time they were available as a kit on Ebay, but they are no longer in production. Your only option for Panther cars are now Kooks or Stainless Works.

​@@Socoolds455 stainless steel wants your life savings 😂😂

About 115K on her now...

The old setup was reasonably stiff, Eaton Detroit springs, it's like I'm on rails now with the new QA1 coil-over setup.

@@Socoolds455 yea my Mechnic told me that the older platform panthers (crown Vic, lincoln towncar, grand marquis are indestructible and comes with a lot lees stupid engineering. The older models were straight foward

@@SRT92 Indeed they are, and although they are bigger cars, they're not quite as heavy as everyone thinks, only about 3800-3900 lbs. They respond well to performance mods, and there are more parts available now that people are starting to get turned onto panthers being a decent starting point for performance builds.

@@Socoolds455 I was gonna say. Cuz if I’d try that shit in mine, it would flip over lol. Body roll is horrible in these cars. I’m just wanting a tune to take off the damn governor people really believe they can run out me until around 110mph then playtimes over for me

@@SRT92 You will not regret a Marty tune from Mo's Speed Shop, even if everything else is stock.

Thanks! They are American Muscle (2013) GT500 replicas, staggered.

@@Socoolds455 Good lookin out Bro, thinking of buying another Grand Marquis again next year

Rears are 275/40R19, front 245/45R19.

ADTR.net should still carry the steering column gauge pods.

Headers have nothing to do with overall volume, it's all in your mufflers. These are the OBX mufflers that came with the kit, Magnaflow knock-offs, so they're pretty mild as far as sound goes...

It's just some matte vinyl strip that I picked up at O'Reilly's. I wish I would have done it with the trim off the car though.

Thanks! Fronts are 245/45R19's and the rears are 275/40R19's if memory serves...

Slot style 80mm MAF's were factory on all 2006+ CVPI's. 2004 and 05 models were equipped with 80mm too, but I believe they were the older style. I pulled the intake from a 2007 CVPI in a yard.

@@Socoolds455 really? I was working on my 2007 crown Vic last week & cleaned my throttle body & plenum. Cleaned my MAF I was trynna find where it showed what MM the MAF WAS ON IT COULDNT FIND IT. I thought they all came with a 60 mm or a 70mm MAF.

@@juanray2614 they don’t have the size on them. But after 2004 civilian cars came with 70mm, CVPIs with 80mm. And of course different computer tuning, exhaust, etc.

@@Socoolds455 coo coo yea imma throw on a 70-75 mm Throttle Body to go with it.. Dude your car is dope & sounds good!

@@juanray2614 Thanks! Be sure to check out my other videos, much more has been done to the car since then, this was like version one.

I would recommend checking out Crownvic.net, it’s a great resource for these cars. I would probably do an airbox/zip tube, throttle body, gears and a tune from Marty Ochs. To start anyway. The sky is the limit with these cars…

@@Socoolds455 are crown vics and mercury compatible and do they sell same parts?

@@aidenvincent1233 Yes

@@aidenvincent1233 The Crown Vic, Mercury Grand Marquis, and Lincoln Town Car are all the same platform, check out crownvic.net

Rear gears and a tune really wake these cars up. If the car is a daily driver, 3.55 or 3.73 gears have decent highway manners. Mo's Speed Shop is the place to go for a computer tune, Marty knows these cars like the back of his hand. Depending on how deep down the "performance rabbit hole" you want to go, ADTR.net has lots of performance goodies, and there are several Facebook groups for performance oriented Crown Vics/Grand Marquis that'll give you ideas and help when you need it. Good luck!

OBX long tube headers/2.5in exhaust, no cats. It's listed for 2003 -2011, but maybe could be modified for a 2000? I don't know for sure...

The driving portion when I turn onto the main street is roughly to 60mph.

19x10 rear, 19x8.5 front.

Taillights are just eBay Crown Vic taillights, they're a direct swap.

Black number trim?

@@Socoolds455 black bumper trim

@@anthonyholloway6200 Oh! It's just self adhesive black vinyl strip. I think I found it at O'Reilly's...

The OBX kit should fit your 2003, you’ll need a tune though.

@@Socoolds455 it for the mustangs right from what im seeing online??

@@spinamerctae4060 www.obxracingsports.com/products.php?pk=1739 This is the kit for the Panther Platform cars (Crown Vic, Grand Marquis, Town Car). They still list it on their website, but you may have to do some digging to find a retailer that can get them for you...

No, used some self-adhesive black vinyl to cover it.

Not OP but I've done the same thing on my Vic. I just used masking tape and black spray paint from Lowe's.

Not paint, but actually black vinyl strips (self adhesive), I think they came from O'Reilly's if I remember right.

American Muscle 2013 GT500 replicas

Sort of, the valve body has been J-Modded, and it has a 3500 stall. Tuned of course, stock otherwise.

@@Socoolds455 cot diggity

@@Socoolds455 I knew it! Lol. Man you’ve got some sophisticated mods here. My first step is headers and muffler delete. She needs to breath better. That thing sounds as if you have a 6 speed

Nope!

Nope! No carrier breaks on Ford axles either, just swap in your new gears. You're probably thinking of the aluminum (Police Interceptor) driveshaft swap. But, unless you're going to do high speeds for long periods (like a high speed pursuit lol), your stock unit is probably fine, unless, of course, you start adding serious horsepower. Thanks for watching!

@@Socoolds455 Thats probably what I was thinking of, thanks for the reply 👍