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Ford Crown Victoria/Mercury Grand Marquis Modifications

39 messages,  Last post on Jun 22, 2009 at 4:22 PM

You are in the Ford Crown Victoria/Mercury Grand Marquis Forum. Your Hosts are pat & karens

What is this discussion about? Ford Crown Victoria, Mercury Grand Marquis, Performance Mods, Exhaust, Sedan


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#6 of 39
Re: Question about dual exhaust [dekester] by turbo301
Apr 07, 2006 (1:37 pm)
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Replying to: dekester (Apr 05, 2006 4:20 pm)

Don't forget, though, that it's much easier to change stuff like that on the old carbureted cars. With all of the computers and sensors on new cars, some traditional tricks may hurt performance rather than help, if they're not thought through very carefully.
 
On that note, though, I could have sworn that my '04 has dual cats, connected through a Y-pipe to the single exhaust. Did this change for '05?
#7 of 39
Re: Question about dual exhaust [euphonium] by joe110
Apr 08, 2006 (8:22 am)
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Replying to: euphonium (Apr 04, 2006 6:05 pm)

I spoke to the SCT dealer and he told me if I put duals on my car, he could get me a stock tune for the Excal 2 that would disable the o2 sensor if needed. Its a standard procedure. But for me to see how the car runs first before changing anything.
#8 of 39
Re: Question about dual exhaust [turbo301] by joe110
Apr 08, 2006 (8:26 am)
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Replying to: turbo301 (Apr 07, 2006 1:37 pm)

My 05 crown has dual cats. I always thought they came with dual cats. I have duals into one pipe.
#9 of 39
Chrome differential cover by joe110
Apr 08, 2006 (8:38 am)
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I just installed a chrome diff cover. For anyone else who wants one, go to Jegs.com. The rear of choice should be a 8.8 10 bolt. There is no listing for a crown vic. You have to match it up as a mustang GT. Looks nice too. Paid 33.98 delivered.
#10 of 39
joe110 by marsha7
Apr 08, 2006 (4:48 pm)
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Replying to: joe110 (Apr 08, 2006 8:38 am)

It the rear diff cover just flat chrome, or is it cast with heat dispersing fins???
#11 of 39
Re: joe110 [marsha7] by joe110
Apr 09, 2006 (2:32 am)
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Replying to: marsha7 (Apr 08, 2006 4:48 pm)

Its just flat chrome. The ones you are talking about are like 180 bucks or so. Polished aluminum I think.
#12 of 39
Re: joe110 [marsha7] by p100
Apr 09, 2006 (8:25 pm)
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Replying to: marsha7 (Apr 08, 2006 4:48 pm)

Keep in mind that aluminum dissipates heat three times faster than stamped sheet metal. Therefore, finned aluminum transmission pans and differential covers are the best.
#13 of 39
joe110 by marsha7
Apr 09, 2006 (2:41 pm)
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Replying to: joe110 (Apr 09, 2006 2:32 am)

I was pricing one out for my Ram 1500, and it was over $200
#14 of 39
Back to dual exhaust..... by dekester
Apr 14, 2006 (5:01 pm)
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If I change my 03 to a dual system, would a crossover (or "H" pipe) help? I know this balances the sound and back pressure on other cars. Would I need to "flash" my computer? If so, where would I go to get this done?
 
Since I'm younger than the usual Grand Marquis owner demographic (at elast in Florida), I want to have mine stand out from the crowd a little. Looking at some aftermarket wheels; really like the American TorqueThrust "D"( with the dark painted spokes) or the TQ II which are all polished aluminum. A little pricey, so I'm considering the old standby - Cragar S/S, but I can't get anyone to tell me what size/backspacing/offset matches the stock steel rims so I can use the tires on the car now.
 
Upgrading to a set of factory LS alloys will run me about $200 per....
 
Deke
#15 of 39
Re: Back to dual exhaust..... [dekester] by jsylvester
Apr 15, 2006 (4:52 pm)
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Replying to: dekester (Apr 14, 2006 5:01 pm)

Get a set of black steelies, and put the chrome center cap, and maybe chrome trim rings. A lot cheaper than alloys, and looks "industrial" to me.

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