How diferent are the 4.6's they use in the crown vics from the one's in the trucks besides the intakes. I have not herd to many of the passenger car 4.6's having PS problems.

 

To start out with they use a 6qt oil pan instead of the crowns 5qt. The truck is tuned a little different also. The truck is a made to achieve the torque at a lower rpm. IE:tuned intake runners. Also the cooling system is a little larger with a larger (more blades) fan. You also will get a larger altinator&battery. I cant think of any other right now...........there are others though.

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97 F-150 4.6 auto, 4x2, 3.55 LS, WMS Velocity tube, K&N, Dynomax Super Turbo exhaust with Echo tube.
Oh yeah, it's Oxford White with crome wheels, Legacy shell & custom grill!

 

The Crown Vic is partly what sold me on my '97 XLT -- I rented one and enjoyed the stoplight thrust for a couple of days -- and then couldn't believe it was just 4.6L !!!

I'd really love to see a 7,500 RPM 4.6 with 4-valves.

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Y2K™

XLT SC SB 5.4L 3.73LS

 

the 4.6 truck engine uses fully floating piston pins. The auto versions do not. This results in a slightly different rod/pin and piston. All in the name of engine life!

Chris

 

Y2K7700, Mustang Cobra, 4.6, dual OHC, 32 valve, 320 hp(after factory fix, maybe). My son has one, I don't remember what the redline is but I think it is in the 7000 RPM range. He is also runing superchip. It will go.

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98 Nascar Edition, Superchip, Airaid, Flowmaster 70 series, bedliner, in bed tool box, Profile bug deflector and window vents, Class III receiver hitch.