Hy guys,
I am new to the site, My son has a 2001 Mustang GT 4.6L and wants to make it meatier. Anyway we have been taling about possible switching the engine to a 302 or a 347 create engine. What I am having problems with is will it bolt on or does anybody make a kit for something like this? also will the transmission bolt on as well? If anybody has any ideas or advice I would appriciate it.

Thanks

Ed

 

You need to swap K-members w/ a 94-95 or aftermarket piece. In addition, the trans will not bolt up. Instead of going that route, may I suggest either making a 351 Clevor or consider the 5.4? Just seems everyone either has a 302 or 347 but no one does a 351 swap, especially one w/ Clevland heads.

 

doing that swap is not emissions legal in most states. If you want more power and building a motor is in your budget then you need to decide how much power you want.

If he just wants it a little meatier feeling but you're happy with the overall hp output then slap in a set of 4.10 gears. He'll think you're a magician for about 1k all in.

And/or toss in a set of VT stage 2 NA cams and springs (about $1500 all in). Or just go ahead and get him a supercharger. A kenne bell 2.1 will wake that baby up (around 5-7k installed and tuned). Alternately a Vortech v2-sq kit will have similar effect (about 4500-6k installed and tuned). A turbo kit is the best power adder on paper but they're much more expensive at about 6-8K for the kit plus 2-3K for install and tune.

If you're in the mood for ludicrous speed, then try a turbo setup on a 4v 5.4L. It'll cost about 20-25K to make it all work but he'll have all the power in the world and a very uncommon setup.

 

Hey guys thanks for the responses so far, he says he wants to eventually race the car so he wants it beefed up. bassman97 when you said about the 351, does this bolt to the transmission? I am guessing not but am asking anyway.
His first thought was to just do a major overhaul with high performance parts but when you look at the cost it is almost cheaper to find a create engine and do a swap. He has done a few small things to it so far, headers, pulleys, throtle body and stuff but wants to go all out and still drive in town on occasion.

Ed

 

351 is BIG hassle to put in and won't bolt up to anything that's there already.

if he wants to race just buy a built short block and ported heads from VT engines add a set of VT blower cams and slap in a blower. Pushrod conversion is mostly for "class" racing so there's not a lot of it happening on street cars.

 

The 351 isn't that much harder. You can use headers made for the Fox bodies w/ a 351 as well as mounts, oil pan, etc. The trans only fits modular engines. However, if you go w/ a 351, just slap on either CHI 3V heads or stock 4V heads and add a mild cam and call it a day.

 

Well, I talked to my son and he said he would rather go the hard way so he can show the car and say me and my dad did this.
So, the 351 is looking better all the time. Do you guyas no of any books, other folks doing this and documenting or anything. I would rather follow somebody elses directions instead of re-inventing the wheel.

Thnaks

Ed

 

There is no 3 valve or 4 valve heads made for the 351. Those are modular heads.
This swap is possible just not worthwile. After your overcome all the install issues electronics are going to be a huge problem the 4.6 ecm will not control anything on the older style fuel injection that the 351 uses.
I would take the money that your spending on a 351 and build a 4valve 5.4. I am trying this swap and only have about $1500 into the motor and all it needs is timing chain hardware.

 

you need:
94-95 K-member (I'd get a Maximum Motorsports 5.0L conversion k-member...there's nothing better period but it requires a show-car standard coil-over conversion... post to the suspension section and we'll chat about that at length)

T-5,t45,tr3550,tko500 or similar tranny. With the power you'll have available NA I'd go with a TKO500 so you never have any hassles there ever, ever.

351 block. I'd like to see a 408 clevesor (clevland heads, 351 windsor block poked .030+ and stroked.. also called a BOSS engine you may remember from your youth.)

Intake manifold: This is a huge consideration. Must be matched to the heads, cam and carb. I'd abandon all electronics and go carbed which would be pretty much mandatory on a clevesor but not on a pure windsor.

Cam/heads: matched to your intake and your overall motor build.

Decide now if you're going to want the stock dash and features to work as it massively complicates matters.

Tranny crossmember: for whatever tranny you pick.
Fuel system: Another matched component. You gotta have the fuel if you up the power with a nasty 351.

Guages: can be fairly easy to use stock with fuel injection but there's a lot of question marks. This is a mod done for race cars... you don't see this type of thing on the street cuz it's a bitch. You do see it on gobs of AI class cars though. I'd go with a custom cluster filled with autometer guages.

clutch: this will depend on the tranny you pick and the flywheel size you pick. don't get goofy and put a race clutch on a street car. It'll be a PITA around town... or in car show parking areas.

If you really want to turn heads, a poked and stroked 5.4 4v modular motor at maybe 5.8L or so with a pair of 70mm turbos would be a helluva lot more interesting and easy enough to do. Hell even without the turbos... a super stroker like that with nice ported navi heads could haul ***.

 

If you know your Fords, you know that 2V stood for 2-barrell carb and 4V 4 barrell. Clevland heads come in 2 flavors from Ford: 2V and 4V but CHI has made "3V" heads.