I have a 70 f250 with a 360 that runs ok, but will need to be rebuilt.
I'm looking down the line on a replacing the 360 with a 460. The questions I have are;
1) Should I build up the 360 to a 390 (if possible) or just go with the 460?
2) Will my C6 bolt right up? Do I need a different bell housing?
3) Will I need to make a driveshaft mod (shorter/longer)?
Any other things to make the switch 360 to 460?
Thanx in advance
Dano

 

Dano, rebuilding your current engine to a 390 will give you the best bang for the buck.

The 385 series 460 is from a different engine family and about nothing swaps between it and the FE series.

You will need engine perches, engine with everything attached, tranny, and prolly a few other things.


guluk



John

 

while i do love 460's, i have had some fe's and liked them alot. i would go the 390 route any day of the week, more straightforward of a project. you didn't say if you had a 2x or 4x4, but finding a divorced t-case for a 335-385 bellhousing pattern isn't that easy, and could take a while if you have a 4x4

 

stick with 390 ,that's what i did with my truck . i love the FE motors they have tons of torque an power to do anything.

 

Stay with the FE motor. You can get a heck of a lot of cubic inches out of it if you really are wanting the larger displacement. Add to that you don't have to swap everything else out and you have a winner.

LT.

 

I agree with these guys. I did swap to a 460 (which I love) but I started with a seized 6 cyl. If you consider all the time and money you'll spend making the 460 fit, you would be better off spending the money on some goodies for your FE. You'll have your truck back on the road alot quicker, and with less headaches.

 

for those of you with 390's, are most of you running carbs or fuel injected? I'm getting ready to start a restoration, and I live in Phoenix. So long drives are the norm. This isnt going to be an everyday driver, but I don't want to have to take out a loan for a weekend gettaway to the lake either.

I also want to convert from my tractor trani to an automatic or a manual that I can actually use 1st gear.

If I wanted the best bang for buck out of fuel milage, what would YOU want?

a 390 combo? 351?

Thanks
Stunts

 

Just a quick FYI, a 360/390 share a bore size. The main difference is the rotating assembly. It's a pretty easy swap. It's what I plan on in the long run with my F250.

 

Is this a joke?

A divorced transfer case has zero contact with the bellhousing. The transmission bolts to the bellhousing and a divorced transfer case is separate from the transmission (divorced: get it?). They are connected by a short driveshaft.

 

Stunts, You can get a FI 351W from about 87to 96, but no factory FE FIs, may be some aftermarket stuff out there.

More power from an FE engine but if FI is on your mind I'd recommend the W. You can also get OD with that setup.



John

 

Ahhh, Mr Monkey,
You have hit on a key point:

Originally Posted by Stuntmonkee
for those of you with 390's, are most of you running carbs or fuel injected? I'm getting ready to start a restoration, and I live in Phoenix. So long drives are the norm. This isnt going to be an everyday driver, but I don't want to have to take out a loan for a weekend gettaway to the lake either.

I also want to convert from my tractor trani to an automatic or a manual that I can actually use 1st gear.

If I wanted the best bang for buck out of fuel milage, what would YOU want?

a 390 combo? 351?

Any FE and the phrase "Fuel Mileage" do not belong in the same sentence! That being said, an FE is a great engine and if I were going to upgrade a 360, I would skip right past 390 by stroking it to a stump pulling 410. Then, if I could afford it, I would buy an adapter kit ($900 +/-) to put an overdrive transmission in it. A good fuel injected 351W with a manual or automatic overdrive would be much less expensive and more fuel friendly, but the stumps you pull with it will be much smaller.
HTH,
Gene

 

sorry, typo. i meant divorced tranny, because they are different than the 2x4 and 4x4 trannys.

 

Yeah, and I get that, but I do want something that I can drive in the city, but still take to the hills. Take the family out for dinner, or pull a nice boat.

Don't get me wrong, I don't want to go all sissy with it. But here in Phoenix we don't pull many stumps.

With those ideas in mind though. . .I did just realize that I may very well want to go to the sand dunes! SO if I cant get FI with a FE motor, with a 351 have enough gusto to drag a truck that heavy around the dunes?

Also, if I did go with a 351, do you have any drivetrain suggestions?

I'm getting addicted to this already

 

Just to clarify, are you saying its difficult to find a 2wd trans for that bell housing? The trans is not divorced either.

the sequence should be motor, bellhousing, 4x2 (2wd) trans, driveshaft,T-case.

 

yes. i am talking about the transmission. it is not the same as a 2 wheel drive tranny. it has a shorter tail section than a 2x tranny. and to find one that came from a 351/400 would be hard, because they were only in highboys for what, like 2 years?