Hey guys I have a question about modding an engine. I currently have an '03 gt but am interested in getting the '11 with the 5.0. What would need to be done to the 5.0 in order to install a SC? Explain like you are talking to a 10 year old because seriously I know nothing lol. Thanks in advance

 

Well we can't be exactly sure because the motor isn't out yet. when it is, we can find out exactly what needs to be done to run safe boost on this motor.

What we know now is that the new 5.0 will be a high compression motor. for people who like naturally aspirated builds, thats awesome. But for turbo/supercharger applications, it creates issues. A turbo/supercharger is basically adding compression to a motor. This is fine on our 4.6s because we have a low enough compression ratio for a pretty good amount of boost to be applied on a stock motor. High boost on a high compression motor will not be good news for your engine as a whole. it will be a ticking time bomb and inevitable explode

We will need to find ways to lower compression on the 5.0s before serious boost can be applied. I'm fairly sure there will be some low boost superchargers available from the get go, just as there are now, and they will be "good enough" for some, if not most, of us. But for people who are really serious about it, they will have to dive into the motor.

The two ways that come to mind most readily to lower compression is to get heads with a larger combustion chamber, or new pistons. Each would increase the volume of the combustion chamber, and thus lower the compression ratio, since the same amount of force in a larger volume will result in lower pressure.

But the problem here is both of these types of changes are pretty expensive. Heads, especially on overhead cam motors (and this 5.0 is dohc), will be extremely expensive. But building a stout boost ready bottom end isn't exactly convenient either, since the whole motor needs to be taken apart and either rebuilt or replaced with a different shortblock.

hope that helps

 

Thanks a lot for the info. Ok so put aside the S/C since it sounds like it will take a bit of tweeking to get everything right in order to apply the S/C. Since this will be a high compression motor what would be the best way to get the most out of the engine keeping it N/A.

 

same sort of things its always been. CAI, full exhaust with long tubes, cams and a tune should make this motor into quite the screamer. its already going to be plenty potent, so its going to be ridiculous when the aftermarket gets a hold of it

 

Ok thats what i thought. I have always loved the sound of a lumpy cam. Anything need to be done the the engine before you swap out the cam or is it just a simple swap?

Also are the cams that FRPP make and warranty any good? I don't want to mod a brand spankin new engine with parts that will void the warranty in case something goes wrong in the engine.

 

well the FRPP cams aren't for the 5.0, they're for the 4.6

I don't know what cams will be available for that motor when it comes out. we'll just have to wait and see

 

k thanks for all the info

 

"it will be a ticking time bomb and inevitable explode"

And he *almost* sounded like he knew exactly what he was talking about.



/That was quite the dissertation, Arin, well done!

 

Ford has not even officially confirmed that the 5.0 is coming out next year. We all know it is, but come on...we can't speculate much with knowing close to nothing about the new motor.

 

Every now and then, I allow myself a coherent and useful post

it might be a whole chassis redesign before it happens again though

 

probably cost twice as much cuz you will need twice as many camshafts

 

I think people consider the fact that this will be a high compression engine and let that convince them that supercharging and/or turbocharging wont be of much benefit...nothing could be further from the truth. Even with cast pistons unless compression is really stout you should be able to run at least 6lb or so of boost reliably, and when coupled with a high compression ratio that should make for some convincing power numbers.

 

Thats pretty much what I had figured. But kits like the ridonkulous Kenne Bells and Whipples pumping out mega boost will not be as easy as they are now (not that they're easy... lol)

 

Some boost on a Hi Compression motor is possible, as long as the tuning is spot on (a little on the rich side) and proper intercooling will help keep it together. Heat is the worst enemy.

 

+1! High compression still allows boost. And high compression also allows you to make more power with equivilent boost on a low compresion engine.

 

Be patient and wait until the engine is atleast announced before you start planning your mods...

 

I concur....

 

Good to see you back at your best, Boomer

 

I was just trying to get some of the background info and basics. Thanks for all the help guys.

 

Here's my mod list for the 5.0 engine that may or may not be in a car I may or may not buy.

S/C, forged internals, CAI, don't know what else yet.