Blown Ford

Holy crap there is some bad info in this thread. And of course most of it from people who don't have a supercharged truck. If you don't know what you are talking about then don't comment.

To the OP, 130,000 is a little high to consider an investment like a SC. But you can do it provided you have taken good care of yours. The 5.4 3V will handle the power from a blower just fine. 12psi is the general limit on the stock internals and transmission. But boost is a poor way to measure this. Rather brake fuel consumption gives us a better idea of what the engine is doing. These engines in stock form will do just fine up to .60 lbs of fuel burn per minute. The stock motor burns an average of .28. My Whipple (twinscrew) at 9.5psi burned .50 making 420rwhp and at 12-13psi burns .61 laying down 475rwhp and by comparison the Roushcharger will burn .60 at 10-11psi laying down 420rwhp. Gives you an idea of how much energy and fuel is being used just to turn the blower. As you can see by the fuel burn rates both engines internals are experincing the same stress but one blower is robbing more power just to operate. Also the Roush Eaton roots blower creates a lot more heat and requires more fuel to prevent detonation. The TVS is a small step in the right direction and a sad attempt by Eaton to keep up with the twinscrew style blower. Nothing against the TVS. It's a great blower but can not make the power of a twinscrew. However it is not likely you will install a built motor and push a TVS to it's limits. Secondly the Saleen blower that fits the 04-08 5.4 3V IS NOT a TVS. It is a twinscrew. It's a great blower and kit but no longer avaliable.

I highly recommend the Whipple twinscrew. However the Roush blowers are nearly out of stock and there are some great sales going to move the remaining stock. Just look around. They are going for around $3500. 8psi intercooled kit will lay down an avg of 380rwhp. Wheel/tire weight will have an affect on this number. The Whipple with 8psi will lay down 400rwhp but the price is higher as it is with the ProCharger, and Edlebrock TVS. Btw the Edlebrock TVS is way overpriced and the kit for our trucks is poorly engineered. So I won't go in to details on it unless you want them. The Procharger will work fine but requires some rpms to make boost verses the Whipple and Roush which can make instant boost when demanded at the pedal. This is important with a 6000lb truck.

Now Tommy1005 mentioned the loss of his transmission at 20,000 miles. This may or may not be related to the additional power. 1000's of guys running blowers on stock trans with no issues. So could have been a fluke. After all about once a week someone post a thread about a dead trans on a stock truck. However poor tuning on a supercharged truck can cause quick failure. Shift values, torque values, pressure, torque converter lockup, power allowed though, and many other things must be adjusted in the tune to make the trans happy and live a long life. The tunes that come with the blowers do not make changes to these values and thus people suffer failures from time to time. I learned this the hard way but with a custom tune that made no changes to the values. With a solid tune these trans will hold up just fine. FatherFord put 100,000 on his stock trans pushing 12psi through a Saleen blower laying down 450rwhp.

You have your gearing covered and I commend you for that. That is key in getting the stress of larger heavier wheel/tire combos off the trans. I will also add with your setup you will likely lose 30-40rwhp from the numbers I posted above and your stock fuel system will limit you to 8psi all do to the weight and additional aero push. But thats ok. I feel safe saying you can expect 120+ rwhp increase over what you have now. Posiibly more depnding on the blower you choose.

For what it's worth I have been supercharged for 49,000 miles truck has 85,000. My bone stock motor has been on over 30 dyno runs and over 50 1/4 mile drag races. Motor is healthy, strong, and my oil analysis prove it. My tire/wheel combo wieghs 86lbs each. I drive the **** out of it but my service routine is stregent.

Sorry for the long post. Please feel free to ask me anything.

lwcountryboyz

To BlownFord, thank you for the very nice write up! Whipple twin screw is deff in my near future. Thought about throwing in 5:13's also. Be a pretty quick gasser on 40"s. But my 4:88 keep me from running high rpm's on the highway and still give me some power to scoot around.

Blown Ford

Awesome. You will love the power. Glad I could help. Grab some 39lb (blue) or 42lb (green) injectors and a custom tune from JDM. You will love it. Do you have an SCT programmer now?

lwcountryboyz

I have a power hungry performance programmer right now with custom tunes. I should be able to just call them up when I get the whipple and they can set me up correct?

NGA PLZ

Hey now, not all of us gave bad info lol. Good luck with the build and let us know how it goes.

Blown Ford

Yes. Bill is a good tuner. He should be able to take care of you. However I have seen him recommend the SCT device software when tuning how hp applications where so many parameters and values are adjusted. Definitely give them a call.

Blown Ford

Lol no of course not. Thats why I said "some".

pcjordan

Bad information?

Ok so here comes the sarcasm.

Boosting does not put extra pressure on your internals... that extra combustion just magically appears.

100% of the HP gain will get to those oversized tires and allow you to go faster (which I believe was you reasoning for asking the question).

You should definitely put another $5k-$8k into a 130k mile engine vs just buying a new V10 and getting the HP output you want with the torque.

End of sarcasm.

Good luck whichever way you go.

Blown Ford

Ohhhh here we go. Again I said there was "some" bad information. Not all of it. And some of the info just needed clarification. Yes a supercharger, or turbo, or cams, or anything you do to add air flow and fuel to the motor to get more power adds stress and heat. It does not mean that the stress is intolerable or detrimental to the motor. Why do you think Roush, Whipple, Edlebrock, and others are offering powertrain warranties from 36,000-100,000 miles to go with the blowers? The Lightning motors for example have a forged crank, cheap forged pistons, and powdered rods. Our motors have, forged cranks, hyperutectic pistions, and the same powdered rods. The pistons in both motors will handle the same power. The exhaust valves in both motors will stand 1600F. The only difference in the 2 motors is the that 3v breathes better thanks to the 2 intake valves and VCT and will make power with much less boost then the 2v Lightning. Now for sarcasm...Oh no should Ford have not Supercharged the Harley and Lightning??? Should Saleen and Roush not have supercharged the 04-08 trucks and sold those fancy trucks through dealers? Because according to you the 5.4 can't take it.

Now about power getting to the ground. The heavy tire/wheel combo is going to cost the OP no matter what. And I think I did a pretty good job of making him aware of that. V10, V8, force inducted or not. They are gonna cost him power in any application. Good for him he had enough sense to regear. The V10 does produce stump pulling torque no doubt and so does the force fed V8.

Mileage. The OP has 130,000 on his truck, and I acknowlegded thats a little high but it will really depend on how he has taken care of it. The 5.4's are built to extremely tight tolerances .001 and when oil changes are kept up with and proper oil used show little to know signs of wear at this point. So it's a choice he has to make. Either way V10 or SC'd V8 it's gonna cost some serious money to make serious power.

pcjordan

TVS SC outperforms the screw until over 16 psi (Saleens are engineered to take it, Shelby's are not which is why Ford chooses TVS over screw).

If all you want is top end umf to help you at higher speeds, go with the procharger.