what is the difference in a 07 mercury grand marquis 4.6 L engine and a 04 F150 4.6 and can they be switched

Asked by Feb 20, 2014 at 05:25 PM about the Mercury Grand Marquis

Question type: Maintenance & Repair

1 Answer

585

The 4.6 Liter V8 in an '07 Grand Marquis and an '04 F-150 are fundamentally identical. They're part of FoMoCo's "Triton" SOHC V6/V8/V10 engine family that was introduced in the 1990 Lincoln Town Car and subsequently replaced the old OHV small and big block V8s across the board at FoMoCo. However, even if the engine is the same, the workload it is expected to shoulder is quite different in a semi-luxury sedan like the Grand Marquis on the one hand and a light truck like the F-150 on the other hand. The '07 Merc's standard 4.6 makes 224 horsepower at 4,800 rpm and 272 lb-ft of torque at 4,000 rpm whereas the equivalent data for the '04 F-150 are 231 horsepower at 4,750 and 293 lb-ft at 3,500. The torque curve of a truck engine is flatter of necessity than that of a car engine. If the same engine is used in both applications, the electronic controls must be tuned accordingly. I doubt an engine swap like the one you envision can be conducted without more or less extensive modifications of the recipient vehicle's engine management system. In addition, the automatic transmissions in both vehicles are digitally tuned to the respective engines they're connected with, so that would require computer modifications, too. Finally, there's the question of different engine mounts in both vehicles, a mere mechanical but not a negligible problem. In summation, I believe an engine swap is not impossible but it would require considerable expertise in electronics if the engine is supposed to run smoothly in the recipient vehicle. As usual in today's automobiles, the omnipresent computer systems are the home mechanic's nightmare.

Your Answer

Add photo

Related Questions

  • average cost of replacing multi function switch in 2003 grand marquis 1 answer

    just checking for the average price of replacing the multi function switch in my car. 2003 mercury grand marquis LS premium.

    2003 Mercury Grand Marquis LS Premium

    -

    Maintenance & Repair

  • Why does by 1999 Grand marquis not start sometimes? 11 answers

    It has happened to me twice now, after driving in town going shopping at at a few places. Each time I had it towed to the dealer and they couldnot find anything wrong with it. It would start every t...

    1999 Mercury Grand Marquis 4 Dr LS Sedan

    -

    Maintenance & Repair

  • Grand Marquis 2004 wont start 8 answers

    Hi. My mercury Marquis is making issues and it doesnt start. I am having this issue from last few weeks. Funny thing is that its start when it wants to. Initialy i thought that issue is with battery...

    2004 Mercury Grand Marquis GS

    -

    Maintenance & Repair

  • 2000 mercury grand marquis air conditioner and heat seem to be running at the same time and defroster will not work. 1 answer

    the air conditioner on my 2000 mercury grand marquis operates with the heater on also. therefore it doesn't cool very well. also the defroster does nt function.

    2000 Mercury Grand Marquis LS

    -

    Maintenance & Repair

  • P38 4.6 HSE - engine dies in motion.

    My P38 has started to simply die going down the road. Tach goes to zero. After sitting a few minutes, usually, it will re-start. I replaced the fuel pump, no improvement. Do I have a faulty relay ...

    2000 Land Rover Range Rover 4.6 HSE

    -

    Maintenance & Repair

Search Mercury Grand Marquis Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Mercury Grand Marquis Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 5,060
#2 kbro
kbro
Reputation 2,040
#3 Js08016
Js08016
Reputation 1,580
View All

Related Models For Sale

Used Lincoln Town Car
41 Great Deals out of 2,106 listings starting at $1,995
Used Ford Crown Victoria
5 Great Deals out of 1,395 listings starting at $1,700
Used Chevrolet Impala
954 Great Deals out of 35,425 listings starting at $1,700
Used Dodge Charger
496 Great Deals out of 30,266 listings starting at $2,275
Used Mercury Marauder
36 listings starting at $7,998
Used Ford F-150
3,136 Great Deals out of 208,989 listings starting at $1,200
Used Chrysler 300
480 Great Deals out of 22,760 listings starting at $1,000
Used Cadillac DeVille
5 Great Deals out of 1,960 listings starting at $1,600
Used Cadillac DTS
52 Great Deals out of 1,825 listings starting at $2,100
Used Chevrolet Tahoe
871 Great Deals out of 28,110 listings starting at $1,700
Used Buick LeSabre
12 Great Deals out of 2,261 listings starting at $1,299
Used Honda Accord
1,009 Great Deals out of 75,625 listings starting at $899
Used Toyota Camry
1,237 Great Deals out of 97,273 listings starting at $1,250
Used Chevrolet Camaro
433 Great Deals out of 40,831 listings starting at $3,500
Used Chevrolet Caprice
178 listings starting at $13,999