I think some of you know I started taking my truck apart the weekend of May 18th. I got it on jackstands, removed all the exhaust, and a few top end parts. A buddy did some misc stuff, drained and pulled the heat exchanger and IC pump. The airbox, plenum, blower, and IC resevoir and lines all came off then, as well as a few other misc pieces.



I took the passenger NAVI exhaust manifold, flipped it over, and bolted it right up on the passenger side head to test for clearance. It fits great. There may be a tiny amount of clearancing (1/16 - 1/8") needed on the corner of the a-arm mount where the manifold outlet is.



The angle and position of the manifold will work great.

 

Looks like plenty of room for the downpipe to route back through as well.



The drivers side is a different story, but won't take much at all to work. The biggest issue is the big hunk of ABS stuff in the way. I will either just extend the brake lines and move it up to the stock airbox location, or remove it totally and put it on the shelf.



Plenty of room for a downpipe on this side too.



I made some measurements and looked at where I could mount and route my Intercooler and plumbing as well.

 

A few more pics from this past weekend...

Passenger side manifold bolted to drivers side...the outlet will have to be cut and rewelded to get the angle right, but it will work out well. The ABS is GONE now.



About to pull it...

 

Here it is on the way out...



Hangin on the picker...



Here it sits with no engine...



Thanks again to my buddy rmfreeze for use of his shop, and him turning some wrenches on it to help the project along.

 

Hey Shawn - looks good so far!!

Not to scare you, because I don't know, but....

I was under the impression that the DOHC heads were wider in both directions - toward the intake and the exhaust. If that is the case, that is going to chew up some of the clearance you have mocking it up against the SOHC heads. Have you put a tape across the DOCH vs. the SOHC to compare the width - exhaust flange to exhaust flange?

Herb

BTW - good stuff, keep the pics coming!

 

Thanks Herb. The DOHC heads are wider toward the intake area. The outside is the same.

 

Cool - I figured that you'd have checked it, but if not, better now than later.

I definately want to follow your progress of this one

Herb

 

Way to go...keep us posted

 

I LOVE seeing people going a different route than everyone else.
Turbo's, ProChargers, strokers etc..

Please keep us posted

 

Looks great!

So how many sets of wheels DO you have? What happened to the 22's?

Jon

 

lol, I sold the 22's a little bit back. I've had a FEW sets on my truck in the last year. I'm some kind of wheel freak I guess. Here's a little closer look at what is currently on it:

 

Actually now that you mention it, I was mixing your truck up with Odin's Wrath.. my mistake. I do remember you selling your wheels a while back. Did you not like the ride of the 22's or was there less performance or something. I only ask because I plan to purchase a set soon. Thanks,

Jon

 

HI!... Are you sure???? A 4.6 2 valve (SOHC) is 25.5 inches wide.

A 4.6 4 valve (DOHC) is 30 inches wide.

That's a 4.5 inch difference in width. I know I gave dimensions for the 4.6 SOHC/DOHC but since the 4.6/5.4 used the same heads, a DOHC 5.4 should also be 4.5 inches wider than a 5.4 SOHC. A guy I know has a 5.4 DOHC in his NAVIGATOR and it is a LOT wider than my 5.4 2 valve SOHC. Also the DOHC uses a OVAL exhaust port where the SOHC head uses a ROUND one.

 

he agreed that they are wider, but all the extra width goes towards the inside, so it won't matter on the exhaust fitment, and yes they use oval exhaust ports

 

The manifolds that he has pictured are the oval port Navigator manifolds.
Also there might be a very slight overall difference in the width of the two engines but not 4.5". The big valve covers of the 4V give it a wider look.
Dale