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Thread: 1992 Mercury Grand Marquis

  1. #41
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    Quote Originally Posted by gadget73 View Post
    THe early 4.6 is sort of a problem to do much with. The stock parts kind of suck, and you're into a lot of work to swap parts that don't suck on. I've gone both ways with one, a bastard block to a 5.0 and a 93 to a PI motor and both were a pain in the ass. The 5.0 swap was rather less involved though. The wiring was definitely easier on that one.
    If I rebuild this engine I would replace the heads with 96 or newer maybe even pi heads but that will bump the compression. If I were to supercharge or turbo it I would need to strengthen the block with at least a girdle plus all the other components such as pistons and rods. It all depends on the upgrades I do to the AOD. Honestly my main goals are 300 hp at the motor. I could just do a pi swap and end with it but the engine is 23 years old.Either way if I swap the engine I still need to buy another one. So that is why I more inclined to stay with this one. For engine management I would use a megasuirt ecu. Again, my plans could still change if I could find a donor car with all the parts I need.
    1992 Mercury Grand Marquis.
    Upgrades: Big Brake Upgrade, digital dash, Custom ignition Switch system, sequential tail lights, Teflon Fuel lines, LED interior lights, rear end rebuild with limited slip.
    Future upgrades: 5.0 swap, 4r70w swap, aluminum driveshaft.

  2. #42

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    I was thinking of swapping out the 4.6l for a 5.0. How difficult is it just to swap one in? Will it hook up to the AOD? Sorry for all the questions. Just not of fan of the mod motor but love the car. Anyways my rings are shot in it too.

  3. #43
    Beater gonna beat sly's Avatar
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    a 93 uses an AOD-E (electronic AOD) and uses the modular bell housing. The only 5.0L that will mate with that is the new Coyote modular 5.0L in the new mustangs and trucks. The old 302 won't mate up with that. You would have to swap in a mechanical AOD from something else to mate with a 302. The worst part though would be all the wiring to get it to work. You'd have to completely swap out the engine harness, trans harness, and then hack together what's left to the gauges in the car. It can be done, but it's a pain. You'd also need 91 engine mounts and possibly a different drive shaft.

    Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
    rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)
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    ... and it should all work like magic and unicorns and stuff.
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    Overhead, some poor bastards are flying in airplanes.

  4. #44

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    If i went with a carbed 302 then i wouldn't have to worry about all the wiring. Correct? I am just looking at all options and also selling is an option too. I know i wont get much for a car that smokes this bad.

  5. #45
    GMN = life pantera77's Avatar
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    You'll probably get more for it with a smokey 4.6 then a hacked together carbed 302 swapped in.
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    2005 Grand Marquis GS - Marauder sway bars, Marauder exhaust, KYB's
    2003 Marauder - Trilogy # 8, JLT, kooks, 2.5" exhaust, 4.10's/31 spline, widened rear's, metco's, addco's, ridetech's 415hp/381tq
    1987 Colony Park - 03+ frame swap, blown Gen II Coyote, 6R80, ridetechs, stainless works, absolute money pit. WIP

  6. #46

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    Does the AOD-E and the 4R70W have the same bell housing so a newer 4.6 could go in?

  7. #47
    I'm an air-conditioned gypsy gadget73's Avatar
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    Yes. Engine controls are where it gets dicey with that. if you retain all of the original controls and find someone to tune it, it will probably work.

    86 Lincoln Town Car (Galactica).
    5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

    91 Lincoln Mark VII LSC SE, triple black (Timewarp) - poly front bushings, KYB struts and shocks, Holley SystemMax1 lower intake, SilverFox AOD valve body,

    1984 Lincoln Continental TurboDiesel - rolls coal

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    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

  8. #48
    Beater gonna beat sly's Avatar
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    checked the thread again... you have a bastard block you can bolt up a 302 no problem. I forgot to check the thread title and just looked at your nickname.

    Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
    rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)
    Quote Originally Posted by gadget73
    ... and it should all work like magic and unicorns and stuff.
    Quote Originally Posted by dmccaig
    Overhead, some poor bastards are flying in airplanes.

  9. #49
    Vinyl Cheese, Meat Pasty SVT98t's Avatar
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    I'd spray tint the reverse lights as well.
    Maybe the tail lights too.

    Finish off the murder look.


    -ryan s.
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  10. #50
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    So, Its been about 3 months I haven't done an update. I finally rebuilt the rear end with 4.10 gears. Still breaking in the gears. still need 290 miles more. I have just found a 302 from a 1988 crown victoria. My main worries were for the accessories of the engine. I know its a lopo but I will be rebuilding it. Now I just need to find an ecu. First goals are to do the swap to fix all the wiring and hoses for the AC and Power steering. After transmission and last the engine. Later in the day I will post pictures of the rear end rebuild.
    1992 Mercury Grand Marquis.
    Upgrades: Big Brake Upgrade, digital dash, Custom ignition Switch system, sequential tail lights, Teflon Fuel lines, LED interior lights, rear end rebuild with limited slip.
    Future upgrades: 5.0 swap, 4r70w swap, aluminum driveshaft.

  11. #51
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    Here are some pictures of the complete rebuild

    Brand New axle



    Carrier is out




    Painted to take care of the rust



    Chassis painted to take care of rust POR 15





    Backlash set at 0.009 in



    Teeth Pattern





    Girdle



    Axle in the car



    On the ground

    Last edited by pivichot; 09-15-2015 at 05:06 PM.
    1992 Mercury Grand Marquis.
    Upgrades: Big Brake Upgrade, digital dash, Custom ignition Switch system, sequential tail lights, Teflon Fuel lines, LED interior lights, rear end rebuild with limited slip.
    Future upgrades: 5.0 swap, 4r70w swap, aluminum driveshaft.

  12. #52
    I'm an air-conditioned gypsy gadget73's Avatar
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    Cool.

    A block is a block really. None of the lopo parts are special, but frankly none of the stock HO parts are either. The closest thing to a "special" factory 302 is Explorer stuff or if you happen to luck into a Cobra motor. You can put anything you like in the shortblock and stick decent heads and intake on it and have something. The accessories can be the tricky part, but you've got them now at least.

    86 Lincoln Town Car (Galactica).
    5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

    91 Lincoln Mark VII LSC SE, triple black (Timewarp) - poly front bushings, KYB struts and shocks, Holley SystemMax1 lower intake, SilverFox AOD valve body,

    1984 Lincoln Continental TurboDiesel - rolls coal

    Quote Originally Posted by phayzer5 View Post
    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

  13. #53
    I'm an air-conditioned gypsy gadget73's Avatar
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    Cool.

    A block is a block really. None of the lopo parts are special, but frankly none of the stock HO parts are either. The closest thing to a "special" factory 302 is Explorer stuff or if you happen to luck into a Cobra motor. You can put anything you like in the shortblock and stick decent heads and intake on it and have something. The accessories can be the tricky part, but you've got them now at least.

    86 Lincoln Town Car (Galactica).
    5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

    91 Lincoln Mark VII LSC SE, triple black (Timewarp) - poly front bushings, KYB struts and shocks, Holley SystemMax1 lower intake, SilverFox AOD valve body,

    1984 Lincoln Continental TurboDiesel - rolls coal

    Quote Originally Posted by phayzer5 View Post
    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

  14. #54
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    Quote Originally Posted by gadget73 View Post
    Cool.

    A block is a block really. None of the lopo parts are special, but frankly none of the stock HO parts are either. The closest thing to a "special" factory 302 is Explorer stuff or if you happen to luck into a Cobra motor. You can put anything you like in the shortblock and stick decent heads and intake on it and have something. The accessories can be the tricky part, but you've got them now at least.
    Honestly, If I am going to spend money on this project I might as well do it right the first time. I tried contacting someone who was selling a cobra block on ebay, but doesn't say anything on the conditions of the engine. The guy was asking 500 plus shipping. I can probably buy a decent rotating assembly for the block with a little more. My aims are 300 hp. If I can get 400 at the crank, even better.
    1992 Mercury Grand Marquis.
    Upgrades: Big Brake Upgrade, digital dash, Custom ignition Switch system, sequential tail lights, Teflon Fuel lines, LED interior lights, rear end rebuild with limited slip.
    Future upgrades: 5.0 swap, 4r70w swap, aluminum driveshaft.

  15. #55
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    Picture of the 302 engine.





    Should get it by the end of the month.
    1992 Mercury Grand Marquis.
    Upgrades: Big Brake Upgrade, digital dash, Custom ignition Switch system, sequential tail lights, Teflon Fuel lines, LED interior lights, rear end rebuild with limited slip.
    Future upgrades: 5.0 swap, 4r70w swap, aluminum driveshaft.

  16. #56
    GMN = life pantera77's Avatar
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    A H/C/I 302 will get you well over 300 at the crank. All your mainly interested in there is the block, rest is scrap weight.
    2020 F250 - 7.3 4x4 CCSB STX 3.55's - BAKFlip MX4
    2005 Grand Marquis GS - Marauder sway bars, Marauder exhaust, KYB's
    2003 Marauder - Trilogy # 8, JLT, kooks, 2.5" exhaust, 4.10's/31 spline, widened rear's, metco's, addco's, ridetech's 415hp/381tq
    1987 Colony Park - 03+ frame swap, blown Gen II Coyote, 6R80, ridetechs, stainless works, absolute money pit. WIP

  17. #57
    LED freak 89TownCar's Avatar
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    The more and more I see this thread, the more and more I want to put a nice 5.0L into a bastard block Crown Vic

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  18. #58
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    Quote Originally Posted by pantera77 View Post
    A H/C/I 302 will get you well over 300 at the crank. All your mainly interested in there is the block, rest is scrap weight.
    I'm only interested in the block and brackets. Everything else is going to the garbage. In the summer, hopefully I will be able to send the block to a machine shop to be inspected.

  19. #59
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    It has been since September I don't do an update. Not much has been done. The rear end on the Mercury has already been broken in. Here is a video or 2.


    So, everything is perfect with the rear end. Speedo is still off, using my phone for a speedometer.
    Plans have slightly changed a bit. For the ECU I found a tweecer RT for relatively cheap, 310 used in good working condition.
    It doesn't work with the 4.6 ECU in my car, even though I was told it would. For the 302 I already have the wiring, need to modify it. Also found an ECU from a mustang for $35 which is supported with the Tweecer RT. It is of a catch code W4H0 which is part of the CBAZA strategy. I just know it will work.
    Here is a picture of the Tweecer RT


    Last thing, I decided to ditch the AOD and use a 4r70w. Don't know if I have posted that yet here. The ecu can control an AODE which can be made to control a 4r70w. Or I might just go with a full manual valve body. Still need to decide. But those are the current update. Things have been slow due to classes and saving up money for the engine. Already have money saved for the transmission rebuild.
    The transmission cam from a 98 explorer with a 5.0.
    Here is a picture
    1992 Mercury Grand Marquis.
    Upgrades: Big Brake Upgrade, digital dash, Custom ignition Switch system, sequential tail lights, Teflon Fuel lines, LED interior lights, rear end rebuild with limited slip.
    Future upgrades: 5.0 swap, 4r70w swap, aluminum driveshaft.

  20. #60
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    Apparently I can only include one video per post. Here is another video.
    1992 Mercury Grand Marquis.
    Upgrades: Big Brake Upgrade, digital dash, Custom ignition Switch system, sequential tail lights, Teflon Fuel lines, LED interior lights, rear end rebuild with limited slip.
    Future upgrades: 5.0 swap, 4r70w swap, aluminum driveshaft.

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