jgrimm

Eh, I am thinking about sticking some B 4V heads off a Lincoln Mark VIII/Continental on my 1999 GT Engine. That or I may just buy the whole engine (Out of the Mark VIII of course The conti was FWD)

What do yall think? I am not sure if they even fit the new edge engines (1999+) cant seem to find a definite answer. This months issue of 4.6 stangs says they are the best heads, which is what inspired me to ask.


The Mark VIII's had like 290HP stock, so thats making me wonder if I should go that route. There are a few sittin in a local junkyard down here an I can possibly get the engines for like 200$ a piece. It would end up a cheaper alternative to a cobra swap or 5.4L DOHC swap if it would fit.

The Continentals were FWD, but I believe the Mark VIII's were RWD so they should bolt up just fine. They may even share the same transmission with the mustang.

If I can get the whole engine, I may just do that as I plan to boost my vert in the future anyway (The Teksid block is known for being able to handle 1000+HP)

Anyhow, thoughts anyone?

-Grimm

MU71L4710N

swapping heads is a pain. you can swap in the motor rather easily if thats an option for u. i dont know what all is involved in head swapping but jcsomething did a nice writeup for swapping a mark8 motor in his SN95 GT.

jgrimm

Never mind the head swap, just got a PM and it is a PITA.
Requires cams, chains, new cover, etc, etc. Totally not worth it in the long run.

Oh well!

Opinions on the 4V out of the Mark?

I am so tempted to carry through with my 5.4 DOHC idea, but the 5.4 makes 300HP stock and is 1800$, but the 4.6 DOHC out of the Mark VIII makes 290HP stock, is considerably lighter (aluminum Teksid block that is known for holding 1000+HP), can be had for MUCHHHH cheaper (If I get lucky and get a complete/unmolested engine tomorrow), and is pretty much bolt in in terms of engine mounts and whatnot.

Only thing that may be an issue is the fact that Ford went to a non-return fuel system on the new edge stangs.

BraMas

FYI the LSC MarkVIII has 290hp the regular Mark VIII has 280.
Many people have done the swap I just have no info on putting a B head 4V in a 99 up

JC316

I am JCsomething and check the guide in my signature. It's a nice swap if you plan on going for boost, but I wouldn't do the work for a NA swap/ 260HP Vs 290HP just doesn't seem worthwhile to me.

The only difference is dual exhaust. The base has a single pipe, the LSC has duals.

jgrimm

Yessir, the engines are virtually the same minus the lsc has dual exhaust. In my car itll be more around 305HP due to free flowing exhaust and a k&n intake.

I do plan for either an STS turbo system (twin mounted under the car) or something of the sort. Maybe a supercharger. I would like to come close to the neighborhood of 600-800 eventually, but for now I am looking to build one heck of a street racer/stoplight bandit (street racing is bad, but you get the idea/know what I mean). I want to hold my own against a few modded cars round here, and run some impressive times down at the strip.

This is gonna sound shallow, but I definitely want a mean sounding cam for sure.

Anyhow. I do plan to run boost when money deems it possible, but until then I still want a mean and durable/reliable NA car.

I also dont want to have to tach up to high rpm to make power, and this is one thing that worries me about running the 4V with the B heads out of the Mark VIII. I need some low end torque so I can keep up with my crew on the street (they all run new edge 2v's with some mods). I am more than likely putting in 410 rear gears as well.

-Grimm

JC316

The 4V sound is outstanding even with the stock cams, but there is no lope if that is what you are looking for. That being said, it's hard to find good cams for ANY 4V since they are mostly blower cams and that run skyward of $1000, then you have to add in 32 valve springs, it will be expensive to cam.

The low end torque is non existent on the 4V with B heads. Once that bastard hits 3K though, it FLYS. One guy with the Mark VIII swap and free flowing exhaust put down 276/288 with the stock motor, so the power is there.

For your goals, I would go with either a C head or a 5.4L 2V and be done with it.

jgrimm

I am thinkin if I run the B heads with 410's or 430's I can get off the line fast enough and on the highway, heh, Ill be leavin my 2V buddies in the dust!

Ill probably spend the 1500 to cam the beast anyway. It seems as if the Mark VIII block and head setup is the best to boost in my opinion. And it is fairly lighter than the Termi blocks as well... Thing probably cools efficiently too.

-Grimm

MU71L4710N

why spend the money for cams if your gonna boost? the BLOCK is rated for 1000hp, but the internals are not. save that 1500 for the supercharger. supercharger + cams = wasted money without a built bottom end.

JC316

Go with the 4.30's man. If you plan to stay NA for any length of time, go with the 4.30's. Oh and 4V's run hot as hell. Here is an idea on acceleration, this is with 3.27 gears, stock motor, GT tune on the computer. It really opens up above 3K RPM.

http://www.youtube.com/watch?v=V7J0tcDjlwY


+1. The Mark VIII uses a slightly tougher rod than the GT does, but not much. I would not push it over 425HP to the wheels without forging the internals.