I finally tuned the truck for 9psi today. I am at 920 AD counts on my Lightning MAF, so when I retune in the spring for 12psi I will have to move up to a SCT BA3000 meter. The truck ran great, only ran into a few issues- I blew a coupler off about 1/4 mile from the house, and then I blew oil all over the engine bay because of a faulty PCV valve. I stopped by the parts store and got a new PCV valve and a one way check valve and it fixed that problem. We ended up having to drive to I-55 to do the 2nd gear pulls because it turns out my truck will do 80mph in 2nd. We also had some issues with my brand new Xcal 2 datalogging, so I got a warranty claim on that one and my tuner replaced it with their newest device- the Xcal3. It basically does the same thing but has more memory, better menu system, and the analog inputs are wired through a much more common Firewire cable(the Xcal 2 uses a 9pin mini din cable).

I was freaking out Wednesday because I realized I forgot to order my new wastegate spring. So I decided I would try to trim my 12psi spring down a little; but before I did I put it on a pump to see where it opened. It was opening on air alone at about 9 psi(spring was colored wrong), but opened at ~5spi on the truck. Since this spring was a large Tial spring, I was able to add a 4psi spring I had in there with it. This finally got me 9psi measured at the madifold.

Since we street tuned it, I dont have any numbers- but it should be close to 380-400whp at 9psi. I can tell you that it tries to lose traction when boost comes in in 1st gear, and the truck is AWD! My AFR was a perfect 11.5-6 across the board thanks to my tuner. We also made this a safe tune timing wise- I can add a few degrees of timing at the track if I need to.

I finished the day by going to the car wash to clean up my oil covered engine bay. I dumped so much oil because I was putting pressure into my PCV valve, I have a vented oil cap, and my turbo oil return happens to be on the oil filler neck. So most of the oil being returned from the turbo was being blown right out of the vented cap.

 

I bet you surprise a lot of people with that ****.

Now it's time to get it to the track.

Congrats man, glad you got the wastegate spring issue taken care of, I saw you were trying to get the right spring in before your tune in another thread.

What sorta boost can a stock 5.0 engine take before it goes POW!!!

 

No doubt

Bill

 

These late 5.0 are good to about 500whp reliably, the block being the weakest link -it takes about 15psi to get it there.

 

What is the weak link in the block? It doesn't split like the old ones does it?

 

yeah, the webbing on these blocks is thin around the main caps.

 

LOL we used to **** with a guy we know that split one of the 5.0 blocks......Just add a Zipper, and you can zip it right back up!

 

I like the originality of your truck! Keep up the progress!

 

Are there any Ford motors that are boost friendly past 500hp?

 

Back when I was planning on putting a Ford motor back in my Mustang this was the block I was looking at.

MAN O'WAR by World Products

It comes in either Aluminum or Cast Iron