They use the same bell housing bolt pattern as a small block so that should help in that area.

The motor mounts are like the ones used in the magnum 5.2 and 5.9 (they have 3 bolts that bolt flat up to the block about midway down the block) but they do not have the mount ears where the 5.2 and 5.9 still had them even though they didn't use them.

I think it would be a cool swap but nothing extrordinary in power or MPG, that being said I would use a 5.2 magnum take about .060 off the block to zero deck the pistons, do a quick port touch up on the heads and put it back together and swap it in with the EFI and all. You could run TTI headers and custom programed OBD 1 computer and make 300 hp and good MPG and would be tons easier to swap.

I blew up a 4.7 in a brand new pickup with 9 miles on it once

4.7 would not be my choice.

sounds neat, but for all the work, time, and cost, it's probably still easier to do a 5.7 hemi since there are some aftermarket parts available for the swap. Initial engine purchase $ will be higher, but fab time and $ on the 4.7 will probably eat into the difference up front.

for a fun economy car I've wanted to take an A body 4 speed and swap a 3.8 out of a van into it, or a 3.5 out of an LH/LX....would be about the same torque as my slant is rated (200 ft-lbs) with double the horsepower (my '76 is rated at 101 net HP, the van 3.8 is I think 215, the 3.5 is 250 tq/215-250hp depending on year...

that said, a fun combo that might be quite efficient and powerful in an A would be a 5.2 magnum, deck the block to ~.012-.015 below deck (shouldn't take a cut of more than .040"), Mr. gasket thin gaskets (will give you tight ~.040" quench), and regrind the roller to bullet cam's HR259/316 lobes. I have a similar this setup in my 3900 lb 5th ave, and so far am pulling 18mpg in mixed driving with an A500, 27" tires, and 3.55's and an edelbrock 600 carb. no performance numbers yet, but feels similar in power to my old 360, which allowed my car to keep up with a 5.7 LX car, so I'd guess it was an honest low-mid 14 second setup. a well tuned EFI, and running 3.23's 26-27" tires and an A833OD in an A body 800 lbs lighter than my car, I bet you'd get low 20's mixed and low-mid 13's...

I say go for it.I wish chrysler would have devolped a ohc v8 more.I think the hemis were supposed to origanlly be a ohc motor. cant waait to see it done though.

I might add if you're serious about this DON'T go with an early 4.7. Had a 2002 Quad Cab 1500 with the 4.7. Yeah, it was a lot of truck for such a small engine, but, gas mileage was a joke, and low end sucked. Were these due to it being an early model? I dunno. I'm constantly reading posts from members with full size trucks and Dakotas that are getting 20+ on the hwy. I think I saw 18 once, and averaged 13-14 in the day to day grind. Didn't matter how I drove it, babied or whipped, 14 was all she had around town.

In something lighter, it should be sweet, but, I'd hate to bust my butt to install it and find out its no different than before.

Plus, if you're planning any power upgrades later on, the 4.7 is overshadowed by the Hemi. There just isn't a lot available for it.

Good luck with it.

I think you got a bad truck.

I remember reading that because the Chrysler AODs are larger than the 727 and 904, they required tunnel surgery, but I didn't figure on the manuals being the same. That kills my buzz a bit, but some really good suggestions were given to avoid this, so with a lot of research I am confident that I will find something that will work. I want to avoid any possibly irreversible modification to the chassis of this car.

As far as other combos, I have considered an EFI /6, 3.5, 3.7, 3.9 and 4.0 V6s, EFI LA or Magnum engine, I even considered the 4.0 AMC inline 6 from a newer Jeep. The one combo that was closest to achieving my fun vs efficiency ratio is the 08-09 4.7 with the runners up being EFI LA or Magnum, then a turbo 6 of some sort.

Why? How 'bout a Studebaker engine from an old Lark...I'm mean if you are looking for a shear adventure that does not make much sense..go all the way! Keep the slant-six and call it a day!

or youcould try one of aussy hemi 6s I think I seen someone selling one on here at one time

I had a 2002 QC Ram with the 4.7 in it. I thought it was a great engine. Got about 15-17 mpg and I beat the crap out of it. I wracked up 110,000 miles in less than 3 years and it never had a single problem. I can only imagine how it would be in a car that weighs 1800#'s less

My only question is, will it fit between the inner fenders of an A-body. Have you measured it just to make sure?

What year did the 4.7's go to 300hp? If it's a newer one, you might not spend that much less than going to a 5.7...?

Wow, sorry I didn't catch this thread sooner! I'm planning on doing the same swap in my 71 valiant using the 4.7L I pulled out of my dakota when I put the viper motor in. My dakota was originally a 4.7L/5-speed manual truck, however I'm planning to mate the 4.7L to the A833 OD that is already in the car to simplify things. I mocked it up using a SB bellhousing and a gutted A833 case I have and it looks like it will work. The oil pan on the dakota with a 4.7L is a rear sump pan, but I'm still not convinced it isn't going to interfere with the drag link. Its just a normal metal pan though so it should be easy to modify as needed. It appears that the factory exhaust manifolds will work without to much issue. The 4.7L in the dakota uses a totally different motor mount setup so custom motor mounts will have to be fabbed.

I think the swap makes alot of sense as the 4.7L is, in addition to being very efficient, a very light motor. It weights way less than a LA motor. In my dakota I could consistently get 22mpg on the highway, so I'm hoping for mid 20's in the much lighter/smaller a-body all the while having the benefits of modern efi reliability and ice cold A/C!

Here's my valiant I'm planning to put it in.

-Jon

I think I did see 1 or 2 4.7 threads on here a while back but they died.

Regardless of whether you get a manny-tranny electrical system, I think you'll still have TONS of electrical issues from the OBDII stuff, especially if you try to get the 300+ hp 4.7, which was released in the last 2-3(?) years.

ABS interaction, electrical gauges, drive-by-wire, returnless fuel pump system, fuel tank evap emissions are the first ones that jump to my mind. You better be an electrical engineer and/or a good detective!

And if you ever have engine trouble, you won't have a good operational diagnostic system (or you have TONS of non-related codes) and it'll be a hurdle to get it diagnosed.

An aftermarket controller would simplify those issues although bringing up different ones (like tuning it!). Would need to convert to a cable-op throttle body.

Since this thread has gotten way off into fantasyland (as always , has anyone mentioned a 6.1 Hemi yet?), I'd recommend, in order of cheap and easy:

A 5.2 or 5.9 with either a Megasquirt or man-trans OEM ECM, and the Mopar trans of your choice (but not a truck 5sp!), or,

A '97-01 5.0 from an Explorer with the GT40P heads (and a slightly bigger cam) with a 4R70W, engine controlled by Megasquirt, trans by a Baumann controller, or

A Ford 4.6 4V with a 4R70W, engine controlled by Megasquirt, trans by a Baumann. Wanna get saucy - install teh 4V stuff onto a 5.4 (ala Lightning)!

2008 is the first year of the updated 4.7L.300+ H.P.The problem with swaps is that you will need a complete a complete donor 2008 truck for all the parts needed as was stated earlier.The computer is also difficult (NGC 3or4)to work with although I believe there a company finally doing some serious work to allow mods to it.You can't run the newer engine with the old (JTEC) controller either. Please no Ford or whatever swaps into a Mopar.

Well seeing as for what you're going to pay for a 2008 4.7, it doesn't make the swap make any sense to me. A decent mileage older 5.7 can be had for less than you're going to pay for an almost new 4.7. And at least with the 5.7 the electronics and motor mounts are all out there and have been done. Seems to me if you used an older 4.7 it would be doable, but the older 4.7's were what, 250hp?

4.7 stuff is not cheap.

http://www.airram.com/product.php?productid=1296

Greg

Well, this thread has gotten off subject and some of you missed the point a little. A ford or Studebaker engine? What no Honda or Nissan Skyline engine suggestions? I think my dad has a turbo L28 Nissan motor laying around not powering his 83 280ZX turbo. I mean by some of your logic that would be next or I could run the car off of pixie dust and peanut butter and just think happy thoughts to get me around, I bet that combo would get killer gas mileage.

Ok, now to address the more reasonable posts. No on the 60 year old /6, I would have more invested getting the 6 up to 300 hp and then it would not be very streetable without using a power adder. This would kill the enjoyment and negate the greatest strengths that engine has, its simplicity and its reliability.

Despite the Pros of the 5.7, it has a little higher power rating and consequently higher fuel consumption than I want. If I go with one with cylinder deactivation and variable valve train then I am in the same boat as with the new 4.7, "electrical nightmare."

The 300hp was just a round number I threw out there because that would be great to have but I think some of you missed that this would be my PRIMARY vehicle making it impractical to have more than what I need. My hot rod for now is my Kawasaki Ninja. In fact the 230hp 4.7 would be fine. Not to mention I bet the prices will go down on the 300hp one by the time I am ready to purchase the drivetrain. I have a lot of work to do before I can carry out the engine swap.

I am very interested in the one guy who is doing the swap and would like to find out more about how the 833 bolts up to the 4.7. Thanks