i've been reading for a couple days and finally decided to chime in and say HI an let everyone theres another guy on board for the 5.4 swap.

i,ve found a 99' w/PI heads and everything for $200 which is a plus since i have npi heads now.
and im just planning on boring it .20 over an adding a cam an the hps intake with forged internals.

What is the highest CR i should go with since i never plan on adding boost and dont have a problem buying premium which is 93 here in kansas city i think. i was thinking 11.5 or 12:1 outta the question?

 

I am from Johnson City. About 2 hours away from Knoxville. I want everyone to know I appreciate the input. I am totally stoked about this swap and plan big things hope to get pics up soon. I know I will have to wait 6 weeks for the intake but that is fine. In the mean time I have decided that I am going to build the motor after all. Just curious, what all would be required to do the DOHC swap and with the 5.4 SOHC what all would I need to take from the 4.6 SOHC and swap over. And Hey we have another one doing the swap.

 

so i get to start the swap a little bit faster than i anticipated. last week i was drivin home when it was pouring outside and got forced to drive through standing water and it ended up being deeper than i thought. now my motor in my cobra is hydrolocked so a rebuild is in order. im gonna put my b heads on the 5.4 and get my intake widened by mmr. so far i havent seen anyone go this route thus far so im kinda pumped.

my question is which 5.4s came out with a steel crank because im not gonna rebuild one if i find it bc i need to get back on the road as fast as possible for as cheap as possible. also will my stock injectors support a stock 5.4 with the only bolt ons being my twin 62mm tb and densecharger cai and bbk h and flows? not that im gonna skimp on anything as important as my engine but money is tight right now after christmas. any help would be appreciated thanks

 

the 97-98' have the forged crank.

this link has just about everything you need to know on the 5.4L

http://www.babcox.com/editorial/ar/eb40340.htm

 

Audi's RS4 runs a CR of 12.7:1 on 93 octane, so I think you'd be ok with 12:1. If I do the 5.4 swap, I think I'm going to stick with 11:1 (which is what my current car has.)

 

Well, the good news is that the motor is getting shipped to Germany this week!!!! Bad news is that we have 8 inches of snow on the ground right now

 

I would like to put on a twin turbo setup with the 5.4, this needs to be a DIY install. What do you all think about the turbo from an old T-Bird? Stick or Auto? Or...Should I be looking in a different direction such as EVO or Grand National? I want quick spooling and don't need to rev over 5600 rpms. Any Thoughts!

 

However, I wouldn't recommend any off the shelf cams because their LSA is just too damn wide. If I had to choose some off the shelf cams I'd go with the old VT stg 2s because their LSA is fairly tight.

For a good DD I'd go with custom grinds without a doubt. I'd go with the fiollowing comp cams lobes ground on a 108LC/straight up:

Intake: lobe #9345, adv dur 274, .050 dur 238, lift .475

Exhaust: lobe #9344, adv dur 270, .050 dur 234, lift .475

 

Yes but for Audi to run that compression on our gas, they detune the engine significantly, which kills any benefit of running that high of compression. Remember, Europe has 100 RON (equal to around 95, 98 here) and instead making new cylinder heads to compensate for the lower octane gas here, it's cheaper for Audi to just detune the engine. For 93 octane, don't push past 11:1 unless you plan on running race gas.

 

combustion chamber design has a lot to do with the CR you can get away with. I'd probably stop at 11.5:1. You may want to drive through California one day and we only have 91 octane in the high test stuff widely available. You don't want to fill up and find out you need a bottle of Torco cuz it's pinging like a diesel.

It'll be basically the same as swapping a 4.6 to a 4v setup. It's not hard and you can use your stock ecu but you will definitely need a tune (probably just to get it to start). For the most part it's a head/front cover/exhaust/intake/timing-set/cooling-hose change and that's about it. It's easiest to think of the 5.4 and the 4.6 as the same bottom half with just a few different pieces for the top end despite that being technically inaccurate.

call up MM and get their k-member spacers (make your life way easier). Any of the stock 5.4 cranks will hold all the power you're ever likely to pour into it. The rods are the weakest link in the chain. 19lbs injectors aren't going to be enough. I'd start with 30's in a 4v combo.

If you do a twin turbo you can use the ones from tbird/svo otherwise they're just too small and won't make the power you're entitled to after that much effort. The grand national turbo is a good one but kinda far off to the small side of the efficiency zone in a single setup and just tad loose for a twin based on the compressor maps I've seen. (yes folks, I've been learning to read and interpret compressor maps so I can help with turbo selection, you're welcome)

 

thanks red. i know you get asked this question everyday about but how much power and torque do you think my b headed 5.4 will make because i know you 2v guys are thrownin down some really impressive numbers. im also gonna have some headwork done while ive got them off. im gonna have the exhaust port raised, the bowls cleaned up a bit, and either a 3 or 5 angle valve job done. im either gonna run the ford gt or fr500 cams dont know which ones yet probably the ones with higher lift.

 

WOW!! Nater where did you get that body kit?

 

look for probably 320-350rwhp or so and mountains of spine compressing tq. It's not hard to tag those kinds of numbers with a very mild 4v 5.4.

 

The RS4 is actually rated lower in Europe (410hp vs 420hp.) <shrugs>

 

Thanks R3d I fiigured that was what would be required, but I wanted to make sure. How are the headers?

 

They are bad ***! Finish welding is complete, they should be coated now and probably done being 3d modeled for the production run of the race units. Street units are next. The difference will be an EGR fitting and maybe a smaller tubing diameter for the street model. We'll see.

European nations also has some much higher octane fuels at the pump than the weak sauce we have here. The down side to high octane is it robs power over lower octane fuels (harder to make it burn). The difference may be that a more aggressive tune (which wouldn't be emissions compliant here) returns much better performance to the euro-driver over the whole RPM band but requires a higher octane fuel and subsequently returns less peak power but probably more area under the curve.

Like the man said, dyno racing is retarded. Peak numbers mean squat... it's average power that makes the car; at least for street cars.

 

I agree with the man 100%. Yeah Dyno is nice to see what you are getting as far as numbers, but really does not tell you what the next guy has and that my friend can only be found at out at the track. I can't wait to see some numbers for the headers. My buddy and me are planning some mock up soon for the 5.4 DOHC. I can't wait. I know it is a PITA, but man it will be so worth it.

 

with all this higher octane talk i know that i'm trying for my fuel setup to be E85 compatable as well as regular fuel.

 

And when I say numbers I meant track times. I would like to pick up a set of your headers and compare them with whatever we come up with to see what differences we may have and times as well. And I am not asking for a hand out, I will buy the ones that you put in production. What do you think?

 

I'd love an E85 setup. Like I said before though, only 2 stations around here carry it (and one of them is a nightmare to get in/out of.) BTW r3d.. Can't wait to see pics of the finished product!

 

I wish E85 was even at least available here. Can't beat 105 octane for the price of 87.

 

It's actually more expensive than regular gas around here. Right now I think it's still at $2.85, whereas 93 octane is currently $1.95. And when gas prices were at their highest last Summer, it was only about 13 cents cheaper.

 

Merlin, got it from Ground Dynamics....The hood is custom though.

 

Hey for anyone doing the swap i have some spare parts laying around....

5.4 2 Front timing cover
FRPP Headers (2v)
and thats it for now... i think i have some other stuff somewhere...
send me a message if you are interested...

 

ohh 5.4 2V timing kit brand new....

 

Nice. Do all 2v 5.4's use the same timing kit?

 

yep yep, just make sure the crank gear is a 2 piece

 

i know this has probably been answered already but will the timing components and timing cover off of a 4.6 fit the 5.4? im just trying to see what i can reuse and what i need to acquire to to the swap. i should be ready to start in about 3-4 weeks depending on money and how much stuff i need. also when i do the swap im ditching my shitty t-45 and goin auto. what tranny and converter should i look out for? the 4r70w or one out of a lightning because i know they can hold the power of a 5.4. thanks

 

Timing cover and components will not fit.

 

Why? The one I pulled off was a 2 piece but the one I got from randy was a 1 piece, and its in the car now.