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For Those Considering a DOHC 4.6L


Scottie-GNZ

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Along those same lines - if anyone has a burning urge to do this swap and wants some real life physical measurements let me know. The shop always has a couple of 4.6 motors sitting around and I keep meaning to take measurements of one of them...

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Guest Anonymous

Holy Handgrenade, I knew that sucker was wide, but man, makes that 302 look like a midget engine. I donno, the fronts of them heads would probably clear the shock towers although not sure how the accessorie drives would play out. Steering clearance would be questionable, and are they making blockhuggers for it? icon_smile.gif Pretty much some of the problems we've identified before, but sure would look neat in there once you get the giant shoe horn out. icon_biggrin.gif

 

Regards,

 

Lone

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The Holy Handgrenade of Antioch? And thou shalt count to three...and lobest thine handgranade toward thine enemies to blow them to ity bity bits...

 

--Monty Python

 

Sorry, a little off topic there, but yeah! The difference in the motors is almost extreme. It's simply amazing what DOHC heads make in the upper mass of the motor. Not so good for clearance. I like the price, compactness, and availability of the 302...not to mention the plethora of aftermarket parts for it too! icon_smile.gif

 

Long live the 302!

 

Davy

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there arent any accesory drives on this motor-nor are there any brackets.the ac,alt and ps pump bolt directly to threaded hole cast in block.its a serpentine system.complete unit is shorter than 5.0 in length and has rear sump.newer units dont even have spark plug wires.the cop (coil on plug) are hiding under covers.i have been thinking about a ford engine because local shelby club has good track events in my area and they accept cars with ford engines .the newer 2000 sohc 4.6 hade some upgrades from factory -i drive new mustangs at work.alternat source is a lincoln mark 8 but some parts are different.

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Yeah - I thought I'd mentioned that they were really wide a couple of times before. I heard a story from an engineer on the program that they were considering the 5.4 DOHC for the Mercury Marauder, but it wouldn't fit in the Grand Marquis' engine bay! Think about that one for a minute. icon_eek.gificon_eek.gif

 

Apparently, the 5.4 is done with a stroke increase, and they actually increased the block deck height to do it. So, the 5.4 is EVEN BIGGER.

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Guys, I think one engine is closer to the foreground in that pic. I saw a recycler in a Mustang mag selling SOHC and DOHC for somewhat reasonable prices with EVERYTHING inclluded. A DOHC was a little more than what my motor is but geez it revs forever and is smooth as glass. Idlers can replace the AIR and A/C if you want - my friend did it on his monster...

 

I'll try to lay some tape on one of these motore and also measure an engine bay. Also, long tube headers on these motors are a WASTE OF MONEY. Use the shorties. On a blown car measured increses in power with long tube vs short is oh about SIX HP. Yup, and they cost quite a bit too - think Honda prices. My friend charges as much as a grand to install them depending on who made the headers. The shorties are very compact and don't think for a moment I'm not pondering that motor for a future swap in another car icon_smile.gif

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Guest Anonymous

>"not to mention the plethora of aftermarket parts for it too!"

 

Ummm, A Plethora? Wow, I'm not going to need to bring up a dictionary for these post am I? icon_rolleyes.gificon_biggrin.gif

 

Quite a Literary Conundrum to ponder, Now if you'll excuse me, I shall ponder it with my G&T by the polo field. icon_wink.gificon_smile.gificon_razz.gif

 

Kindest Regards,

 

Lone icon_cool.gif

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Lone, my mind was drawing a blank for the word variety, so I thought about using myriad, but decided against it. I felt the word selection was a bit dull--sorry, I'm just trying to get some word satisfaction in here. To think, I used to talk like that back in college--the years and beers have done their worst...

 

Davy

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quote:

Originally posted by DavyZ:

...Lone, my mind was drawing a blank for the word variety, I felt the word, selection, was a bit dull--sorry, I'm just trying to get some word satisfaction in here...Davy

 

Hmmm, How bout:

 

Chilling Array, Charitable & Alluring Assemblage, Ambitious Grouping, Covetous Assortment, Exquisite Collection, Assertive Compilation, Concentrated Arsenal, Sizeable Allotment, Wicked Gathering of, Delightful Ensamble icon_biggrin.gif

 

Amazing what a Slow Sunday Afternoon will do to a person!

 

Kevin,

(Yea,Still an Inliner)

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Guest Anonymous

Heh, sounds like those book reviews on a books back page from a bunch of unimportant newspapers... icon_smile.gif 'A storie so chilling you know it could only come from the mind of 'put author name here', complex, yet witty with an end that is too terrifying or shocking to believe. An immediate cult classic said Time Magazine.' 'Fill in Paper's critic name here'

 

icon_biggrin.gif,

 

Lone

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Okay, I've got measurements for ya' icon_smile.gif

 

THIRTY inches wide, 24inches deep, 20inches tall w/no oil pan. Oil pan is shallow up front I'm told. WIDE but my friend says he thinks it would fit having looked at my car but we did NOT try to measure the engine bay. Headers tuck up nicely, hard to explain how they angle etc. If someone gets a chance measure up the engine bay on a Z and let us know how close it is icon_biggrin.gif

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Guest Anonymous

Will that monster actually fit in a 280. Would you have to do away with the front suspension !!?? Ha

 

[ August 23, 2001: Message edited by: 280 NOTPD4 ]

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Guest Anonymous

How much easier is a 302 to install rather than 350. What benefits? I know aftermarket parts and distributor placement. I'm considering the v8 swap and I have found a 302 and tranny for $200 with 80000 miles on it. What's everybody think. Lots of replies and info please!

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Easier? I'm not sure anyone has claimed it's easier - in fact it's probably harder. With the 350 you can get pre-made mounts and th eswap is better documented. You can also get a strong 6speed. With the 302 you get none of that and must make your own mounts. To get a 6speed with the Ford you'll have to buy new and get around the slave cylinder issues etc.

 

The Ford motor IS lighter though and can be mounted up just fine if you fabricate the mounts. What year is this 302? Is it out of a Mustang? will you be rebuilding it? With 80K on the clock I'd be checking out the rings since the Ford "low tension" rings tend to lose tension more quickly than standard rings. What all does the $200 buy you?

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Guest John Adkins

I read somewhere that the Ford Modular V8s were originally designed during the time that

they thought that it would just be used in transverse engine, front wheel drive cars. That explains why the DOHC is so wide but very short in length. In a transverse mounted front drive, the engine sits sideways so that the heads would face the front and back of the car while the bellhousing and front of the block face the left and right front wheels.

 

Late Model Mustangs must have really wide engine bays!

 

The SOHC 4.6 like I have in my F150 doesn't look as wide, I should take a tape measure to it....

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Nah, it's a FOX engine bay just liek the older Mustangs. Racers swap the DOHC engines in and Ford used them as "mules" during development too.

 

Contrary to what Ford advertises, these engines are FAR from "new". Ford has had them on the drawing boards for a good while. It takes TIME to design an engine from scratch! It's quite possible that they thought they would be transverse only but that's the first I've heard that. They do mount that way in several vehicles...

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