4.6 32 valve DOHC Modular

olddog · #1 (**permalink**) 08-19-2006, 09:33 PM

I talked with Mike at Quaker Steak and Lube, before the London show, and spoke briefly at London. In talking he said they had at least one person build a modular car, not sure exactly how many or if it was completed.

The modular height and width is larger than a FE, but length is shorter due to the 3.5" bore. A have gotten mixed information on the weight (sure would like to no what they weigh). Does this engine option change the ballance on the front/rear wheels? Elaborate a lot if you will.

In fact any and all information pros and cons would be greatly appreciated, as I cannot decide what engine I would like to use.

My reason for liking the modular. It is very reliable. According to Sean Hyland 400 HP normally asperated is not only doable, but it will still get you 20mpg in a 3700 lb Mustang. Good HP, very wide torque range, excellent driveability, Dependable, good MPG, EFI, and any Ford dealer can work on the engine.

My reason for not liking the modular. EFI means I am less able to work on or tune the darn thing without spending big $$$, where a carborated engine is simpler to work on (and work on it alot you will with a carborator). Not sure if this engine would hurt the resale value of the car.

Annother issue. I have heard that the year of the engine block sets the emissions by Ohio law. Only 7 counties check emissions, now. So you can tittle a car everywhere else and emissions is not checked. However in the future that could change. I darn sure do not want to have to put CATS on a Cobra. This tends to make you want an old block.

Any help you can give that will stop me from talking myself in circles, would be appreciated.

stuartb · #2 (**permalink**) 08-19-2006, 10:31 PM

olddog
I have heard that the 4.6 will fit but you might have to modify the engine bay a little bit. But you are right about the carb vs. efi, the carb will be easier and less $$$ to work on. But you won't have the efi and the gas mileage sounds pretty good to me, remember that your putting it in a cobra and unless this is going to be a daily driver it is a fun toy.
Also go to shop talk and look for the thead trying to decide on engine there is a diagram about half way down on the page that shows the differences in the size of the engines as far as height and width go. BTW, most of what I am writing I got off of this site from other users when I was trying to decide.

Take a look at engine factory they have efi 351w with 425hp.

Rick Parker · #3 (**permalink**) 08-19-2006, 10:56 PM

olddog:

Be careful with the actual engine you select. Some of the early heads in the Cobra Mustangs had problems with spark plug threads (or lack of them). They used a plug with very few threads and were known to actually "Blow" the plugs out of the heads after the threads fractured. I know of one motor that had a "ticking sound" (like a bad lifter or rocker arm) it turn out to be the weakened threads allowing the combustion charge to escape. The ticking got progresively louder as the engine was warming up.

FFR428 · #4 (**permalink**) 08-20-2006, 07:10 AM

And if i'm not mistaken there is a new carb intake available for the mod motors. I'm pretty sure it's in the new FMS catalog. Maybe check the FFR site on the mod motor forum. Sergio and the other guys are very well informed on current offerings. Good luck, G.

mj_duell · #5 (**permalink**) 08-20-2006, 12:41 PM

Quote:

Originally Posted by FFR428

And if i'm not mistaken there is a new carb intake available for the mod motors. I'm pretty sure it's in the new FMS catalog. Maybe check the FFR site on the mod motor forum. Sergio and the other guys are very well informed on current offerings. Good luck, G.

Like this? We sell 4.6 DOHC equipped with this set-up. Other Mod motor packages as well.

--Mike / Turn Ten Racing, Inc.

olddog · #6 (**permalink**) 08-20-2006, 03:03 PM

Thanks all.

Anyone actually weigh a 4.6?

I have seen modulars with carborator and belt driven distributors (no computer anywhere). My first guess would be less power and worse MPG, but simple for olddogs to deal with. At that point, what would be the advantage over a Windsor pushrod engine?

cobracrazy · #7 (**permalink**) 09-12-2006, 04:12 PM

aluminium or cast iron block? I seem to recall they weigh about the same as a 302ci motor with aluminum heads.

Dennis Kelley · #8 (**permalink**) 09-12-2006, 05:07 PM

The 4.6 is a very large motor deminsionally and lacks cubic inches. I would not bother with the swap. Do a windsor with EFI if you have to have efi. I helped a friend do a cam swap and its big money to make mod motors make hp. I didn't think the motor was what I would consider user friendly. Good Luck with what ever motor you choose.

Blair · #9 (**permalink**) 09-12-2006, 07:30 PM

I reckon they are great. Just buy an engine from SHM or out of an 03-04 Mustang 'terminator' Cobra. Have to update my gallery cause it is well behind.

Blair

Dwight · #10 (**permalink**) 09-12-2006, 08:10 PM

The 05-06 4.6 "three" valve motor is the one that makes all the HP. Stock motor with a Supercharging System with V-2 SQ S-Trim for 2005-2006 Ford Mustang GT makes over 510 to the rear wheels. Thats with 11 psi and it has a intercooler. The 3 valve is better than the 2 or 4 valve 4.6 motors. It may prove to be one of Ford's best motors ever.
Dwight

http://vortechsuperchargers.com/