I've pretty much given up on the idea of making a 4v out of my 2v 2002 5.4L F-150. The 4v would give me what I wanted to 3000 rpm and then kick in the other intake/exhaust runners after that. It seems the closest I can come is by using a set of 3v heads. Any body have an idea as to what would be involved? Comp Cams has the cams so it must be a popular enuff engine to consider making them. I would imagine the stock ECU could handle the new (ported) flow requirements. I'd appreciate any help I might get.

 

wont work with 3v heads on your 2V setup. The pistons are different - yours lack the exhaust valve relief for the repositioned exhaust valve on the 3V heads. Your truck lacks the engine management to control the 3V variable cam timing. The intake wont work since yours wont fit and the 3V has drive by wire rather than a cable. I cant think of a more complicated conversion. It would be easier to put a 340 dodge engine in your truck than a pair of 3V heads.

 

Why don't you spend the time and money on a 6.8 V10 into your truck!!!

 

HI!... Or just do up your current 5.4. Look at my SIG. I got those #'s on a N/A 5.4.

I remember reading somewhere where after you change the pistons you can bolt on the 3-VALVE heads to a 2-VALVE shortblock, but you have to have custom cams built to run the 3-valve set-up with out the Variable Timing. I believe the guy was making over 425RWH.P in N/A trim. It's a ton of fabrication though.

 

My performance shop is leaning toward a complete engine and just rebuild the short block to take more power. The heads are going the max route with porting and all valve train components being replaced with Comp Cams stuff. I had thought of using 4v heads but they said that would be a nightmare.

 

I thought about it-for a micro second. Performance parts availability is non-existent.

 

I'm not trying to make a max effort truck. I want to just walk away like I pulled the trigger on a 125 shot of nitrous. It gives me great pleasure to see guys look for a bottle or expect to see a blower on the motor and not find it. I had a V6 like that. Drove the V8 guys crazy (and the engineers at Cadillac also) and when I sold the motor the guy dropped it into his late model and went racing.

 

buy a 5.4 navigator 32V engine from a wrecked truck and plop it in. Easy conversion and 300HP out of the box. Add a blower down the road and have 450HP.

 

Those three valve ports are nice and big aren't they - First time I seen them - was a little surprised -

http://cgi.ebay.com/ebaymotors/05-06...em290201809302

 

I'm not sure that's true now, but it could be. I'm building up another 3V for my truck and got this info about ditching the VCT.

Edit- Actually, I think the adjustable cam sprockets are made by Fidanza, but are available through Boss 330 racing.

 

Apparently I'm not the first guy to want to do this. My engine builder said don't do it. They would do the engine and even pick one up complete one for me but it's up to me to get it running.

 

Up to you to get it running??? You better find a new builder!

Phil

 

He will not do the electrical. There's other shops around here for that. I don't know if I would want to tackle a harness installation job.

 

You'll be much better off going with ported 2V heads and high performance cams.
You'll save yourself a hole lot of headaches and make good power.

Phil

 

Neal,

Look what I found:

JMC