crown vic 4.6 swap?

Discussion in '1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-' started by Adams91LX, Dec 14, 2009.


  1. Adams91LX

    Adams91LX Active Member

    Joined:
    Dec 9, 2003
    Messages:
    702
    Likes Received:
    9
    Trophy Points:
    29
    So I found a lightly 4.6 engine/trans with all the accessories for 400... it's from a 94 crown vic...

    would it be worth swapping into a fox?

    How many parts would need to be swapped to get any power out of it?

    thanks
    #1
  2. EPIK

    EPIK Member

    Joined:
    Jul 3, 2004
    Messages:
    830
    Likes Received:
    1
    Trophy Points:
    16
    Hell no!!! A 94 4.6 motor is non pi (non performance improved) & most likely has about 200hp @ the crank. The only 4.6 worth swapping in IMO would be a 4V....

    To get any power out of that 94 motor, you would need 99-04 heads/cams/intake, & that would only put you at PI motor specs which were roughly 265 hp/300 tq.
    #2
  3. Adams91LX

    Adams91LX Active Member

    Joined:
    Dec 9, 2003
    Messages:
    702
    Likes Received:
    9
    Trophy Points:
    29
    meaning too much work to get power out of.... sucks... 400 bucks is pretty cheap for running engine/trans...
    #3
  4. EPIK

    EPIK Member

    Joined:
    Jul 3, 2004
    Messages:
    830
    Likes Received:
    1
    Trophy Points:
    16
    Definitely. It is a very good, reliable motor, BUT, not much of a powerhouse & not worth all the work... I will bet you it only puts down about 175rwhp LOL...
    #4
  5. Chrome_Rust

    Chrome_Rust Member

    Joined:
    Dec 6, 2008
    Messages:
    550
    Likes Received:
    0
    Trophy Points:
    17
    A 2v 4.6 could be a good swap, but the pre 96 4.6's are JUNK! I have a Crown Vic fetish and can tell you all the difference between them. If you are looking at Vic engines get anything after 2001. That is when they went to the PI stuff, also the 4.6 in the 2004 and later cars are rated @ 250hp, exacly the same engine as the 260hp 'Stang engine.

    On the 94 engine, if it is still in the car and you can hear it run, and it isnt smoking to beat the band (pre 96 have problems with valve seals) and you can get it ALOT cheaper then buy it and tinker. But the throttle body is at the rear of the manifold, and the intakes flow like crap. also they are only rated at 195 Civvy and 210 Police HP. Sorry for the disjointed post... I'm tired.
    #5
  6. Adams91LX

    Adams91LX Active Member

    Joined:
    Dec 9, 2003
    Messages:
    702
    Likes Received:
    9
    Trophy Points:
    29
    have any idea what parts would have to be swapped to make it worthwhile?
    #6
  7. Chrome_Rust

    Chrome_Rust Member

    Joined:
    Dec 6, 2008
    Messages:
    550
    Likes Received:
    0
    Trophy Points:
    17
    Keep the oil cap, and swap everything under it for anything 2001 or later....
    #7
  8. Adams91LX

    Adams91LX Active Member

    Joined:
    Dec 9, 2003
    Messages:
    702
    Likes Received:
    9
    Trophy Points:
    29
    I lauged so hard when i read this...

    :lol:
    #8
  9. Gearbanger 101

    Gearbanger 101 we love us some gays up here Super Mod

    Joined:
    Aug 11, 2002
    Messages:
    14,088
    Likes Received:
    805
    Trophy Points:
    164
    The '92-'95 Romeo engines were not only down on power, but also amongst the least desirable of all the Modular blocks. As stated...the heads and intake are junk and the short block itself isn't much better, as are most of the linkages. The earlier F2VE iron blocks although not completely weak, are inferior to the '96-up F6/F7 blocks. The earlier blocks us 4 cross bolted mains, where the later blocks have 5.
    #9
  10. Mustang5L5

    Mustang5L5 Car used in adult film "Highway Gangbang-InDaButt" SN Certified Technician Founding Member

    Joined:
    Feb 19, 2001
    Messages:
    21,611
    Likes Received:
    304
    Trophy Points:
    124
    As much as i love mod swaps, a 94 vic motor is not one i'd use.

    If anything look for a PI motor, or maybe even a 93-98 Mark 8 4V engine.
    #10
  11. stykthyn

    stykthyn Commander of the snuggie cultists

    Joined:
    Jul 6, 2006
    Messages:
    7,834
    Likes Received:
    518
    Trophy Points:
    163
    I see a lot of these in my local yard. I was wondering if a cobra intake would wake that beast up and make it a worthwhile swap.
    #11
  12. Mustang5L5

    Mustang5L5 Car used in adult film "Highway Gangbang-InDaButt" SN Certified Technician Founding Member

    Joined:
    Feb 19, 2001
    Messages:
    21,611
    Likes Received:
    304
    Trophy Points:
    124
    Why stop there?

    [​IMG]


    There are 3 mark 8's at my local yard. I wonder how much i could snag an engine for.
    #12
  13. stykthyn

    stykthyn Commander of the snuggie cultists

    Joined:
    Jul 6, 2006
    Messages:
    7,834
    Likes Received:
    518
    Trophy Points:
    163
    Bill is going to shat himself if you let him see that. its even the same color as his.
    #13
  14. SVT32VDOHC

    SVT32VDOHC waiting for the next hack atta Founding Member

    Joined:
    Nov 23, 2001
    Messages:
    4,486
    Showcase:
    18
    Albums:
    1
    Likes Received:
    21
    Trophy Points:
    69
    If your going to do a 4.6L swap get one from a Mustang. 99-04 are the most desirable for a 2V. But even if you get a 96-98, that's waaay better than trying to make one work from a Crown Vic. You are gonna run into all sorts of trouble.
    #14
  15. srtthis

    srtthis the guy doing it does every local racers rear end

    Joined:
    Jul 4, 2009
    Messages:
    3,818
    Likes Received:
    425
    Trophy Points:
    114
    if for some reason you REALLY want to stay with a 2v. find one of those mark8 32v motors and throw a set of 2v PI heads on them :) good things happen
    #15
  16. Mr. Rustypwnz

    Mr. Rustypwnz Advanced Member

    Joined:
    Jun 2, 2005
    Messages:
    2,064
    Likes Received:
    35
    Trophy Points:
    69
    if you have a 97-98 mark 8, swapping a kewbra unit on will make maybe 5 hp more lol..
    #16
  17. Mr. Rustypwnz

    Mr. Rustypwnz Advanced Member

    Joined:
    Jun 2, 2005
    Messages:
    2,064
    Likes Received:
    35
    Trophy Points:
    69
    32v means its a 4v not a 2v why would you swap out b heads for some pi heads? npi heads flow more anyway, its not the heads that are bad its the cams/intake..
    #17
  18. Gearbanger 101

    Gearbanger 101 we love us some gays up here Super Mod

    Joined:
    Aug 11, 2002
    Messages:
    14,088
    Likes Received:
    805
    Trophy Points:
    164
    First....he realized that 32V means the engine is a 4V. The actual point behind the swap is cutting some serious weight with the aluminum block and adding a pile of compression to the engine by combining the 2V top end and the 4V bottom end. The B-heads do outflow both the PI and NPI heads, but they do so at the expense of added weight and low end torque production.

    Second....NPI heads don't outflow PI heads. Maybe after serious porting a difference will be realized, but stock out of the box the PI heads school the old NPI castings. But yes, the cams and intake are trash on the NPI heads too.
    #18
  19. srtthis

    srtthis the guy doing it does every local racers rear end

    Joined:
    Jul 4, 2009
    Messages:
    3,818
    Likes Received:
    425
    Trophy Points:
    114
    Gearbanger ftw... COMPRESSION!!!
    Posted via Mobile Device
    #19
  20. Mustang5L5

    Mustang5L5 Car used in adult film "Highway Gangbang-InDaButt" SN Certified Technician Founding Member

    Joined:
    Feb 19, 2001
    Messages:
    21,611
    Likes Received:
    304
    Trophy Points:
    124


    How would that compare to the 3V 4.6L? I've read it clocks in at 420 pounds fully dressed. That seems pretty light.

    I'd imagine there would be a flood of 3V's available in the boneyards with all the 05-10 Mustangs and 04-10 F150's in the boneyards in the next few years.

    Seems a nice chunk of weight off the nose and some good performance potential
    [​IMG]



    Here's another sick twisted though...what's the new 3.7L wiegh in at?? It is all Aluminum right? 305HP too? EVen though it's a V6, that's Cobra engine HP right there. 275 ft-lbs of torque is a little weak, but a light coupe and some 4.10's will fix that. Add a nice power adder and that might be a light but pwerful combo
    #20

Share This Page