Any Ford RV/ Motorhome experts on here?

[ArdWrknTrk]

.....but they're still old and they've been worked hard.

This is the 460's purpose.

I beat on mine almost every day.

It just keeps going.

No drama, no complaining.

 

[Rembrant]

.....but they're still old and they've been worked hard.

This is the 460's purpose.

I beat on mine almost every day.

It just keeps going.

No drama, no complaining.

I was doing some reading last night on some RV forums, and I found quite a few discussions where people went to pretty great lengths trying to get better MPG out of the 460, and every time the responses were the same: "No noticeable difference". Seems 6-8 MPG is the norm, and 9 maybe 10 if you're driving easy on flat ground with a tail wind. Getting more power is no problem obviously, but more MPG seems to be unattainable. We don't really intend to leave the Maritimes with it, so FE is not a huge concern. Gas is about $4.25/gallon for me right now, although it will likely be closer to $5 even by summer.

None of the sellers we spoke to could tell us the size of the fuel tanks, but I'm guessing from what they told me their fill up costs were, they must have approx 38-40 gallon tanks?

[ArdWrknTrk]

I was doing some reading last night on some RV forums, and I found quite a few discussions where people went to pretty great lengths trying to get better MPG out of the 460, and every time the responses were the same: "No noticeable difference". Seems 6-8 MPG is the norm, and 9 maybe 10 if you're driving easy on flat ground with a tail wind. Getting more power is no problem obviously, but more MPG seems to be unattainable. We don't really intend to leave the Maritimes with it, so FE is not a huge concern. Gas is about $4.25/gallon for me right now, although it will likely be closer to $5 even by summer.

None of the sellers we spoke to could tell us the size of the fuel tanks, but I'm guessing from what they told me their fill up costs were, they must have approx 38-40 gallon tanks?

Sounds about right.

In pickups just breaking into double digits is the norm, whether empty or overloaded.

I'd expect a bigger barn door to net a bit less.

As I recall the vans had a big 40 gallon midship tank.

But again, that was many years ago and I never owned one.

[grumpin]

Yes, cracked manifolds are an issue with 460's in motorhomes.

Running a 460 for hours and hours under load (weight and wind resistance) pours a LOT of heat not the exhaust.

Slotting the end bolt holes allows for expansion and contraction but leaves the gaskets prone to failure.

Doing it as Ford intended (milled flat, NO gasket, just graphite paste) in addition to slotting seems to cure this.

So does the manifold shear the bolts off in the head too, or does it just crack? We had a Jeep years ago with this exhaust manifold issue, and the expansion/contraction of it would shear the end manifold bolts off in the cylinder head.

Ok, good info in any case. I've been told to listen for the tick tick tick exhaust noise.

"Ok, good info in any case. I've been told to listen for the tick tick tick exhaust noise."

The two 460's I have owned, this one and a 1994 both tick when they are cold, goes away when they warm up.

 

[Rembrant]

The MPC shows the 460's getting EFI in '88, with the exception of the F53 Stripped Chassis, which apparently stayed carb'd in '89 so much have been EFI'd in '90.

But I don't know that I'd worry too much about the first gen EFI. It was EEC-IV, which means speed density and bank-fire. The 460 didn't get EEC-V with MAF and sequential until '96, and then only in CA. But if you are staying stock then the EEC-IV shouldn't be a problem.

So the EFI 460 should be the same from 1988-1995 for the most part? We've made an offer on a 1993, and if we get it, I will have to start hunting for stock air intake parts (I'll explain later), and I'm curious what parts interchange from what other vehicles and years, etc? I found the picture below in a search.

I assume I'd have to find parts from another E350 cutaway with a 460, be it an RV or a Cube van. Would F-series with an EFI 460 share any of the same parts with the E350?

 

[ArdWrknTrk]

The MPC shows the 460's getting EFI in '88, with the exception of the F53 Stripped Chassis, which apparently stayed carb'd in '89 so much have been EFI'd in '90.

But I don't know that I'd worry too much about the first gen EFI. It was EEC-IV, which means speed density and bank-fire. The 460 didn't get EEC-V with MAF and sequential until '96, and then only in CA. But if you are staying stock then the EEC-IV shouldn't be a problem.

So the EFI 460 should be the same from 1988-1995 for the most part? We've made an offer on a 1993, and if we get it, I will have to start hunting for stock air intake parts (I'll explain later), and I'm curious what parts interchange from what other vehicles and years, etc? I found the picture below in a search.

I assume I'd have to find parts from another E350 cutaway with a 460, be it an RV or a Cube van. Would F-series with an EFI 460 share any of the same parts with the E350?

Heads changed in 1993 (F3 heads) have better ports and a slightly different chamber.

Everything interchanges.

California 7.5l engines got MAF SEFI in 1996.

Everything else was Speed Density and had to stick close to stock cam specs.

[ArdWrknTrk]

Heads changed in 1993 (F3 heads) have better ports and a slightly different chamber.

Everything interchanges.

California 7.5l engines got MAF SEFI in 1996.

Everything else was Speed Density and had to stick close to stock cam specs.

Doh! 😣

I must have not metabolized my third cup of coffee.

Because I surely HAVE had my third cup..

I can't say anything specific about the intake, but the basics should work just the same.

[Rembrant]

Doh! 😣

I must have not metabolized my third cup of coffee.

Because I surely HAVE had my third cup..

I can't say anything specific about the intake, but the basics should work just the same.

Just starting my 2nd cup, but my cups are large ones...lol. I've already been out to get my bagel and Timbits for the dogs.

Yes, so I was wondering what intake parts interchange either between E-series models, or will any parts from the F-series transfer over?

Any commonality in intake parts between a 351 EFI van and one with a 460 EFI? I was reading that the lower half of the air filter housings are all the same, but that the upper part and ducts between it and the throttle body vary between engines.

It doesn't matter all that much right now anyway...all we have at the moment is a handshake deal...this thing is not in my driveway yet.

But...seeing as how everything is being shut down around me, I might have some free time to go hunting around the junkyards coming up...

[Gary Lewis]

Doh! 😣

I must have not metabolized my third cup of coffee.

Because I surely HAVE had my third cup..

I can't say anything specific about the intake, but the basics should work just the same.

Just starting my 2nd cup, but my cups are large ones...lol. I've already been out to get my bagel and Timbits for the dogs.

Yes, so I was wondering what intake parts interchange either between E-series models, or will any parts from the F-series transfer over?

Any commonality in intake parts between a 351 EFI van and one with a 460 EFI? I was reading that the lower half of the air filter housings are all the same, but that the upper part and ducts between it and the throttle body vary between engines.

It doesn't matter all that much right now anyway...all we have at the moment is a handshake deal...this thing is not in my driveway yet.

But...seeing as how everything is being shut down around me, I might have some free time to go hunting around the junkyards coming up...

I don't have documentation, like the MPC, for anything after 1989 so can't give part numbers. But from my limited experience I think your info is correct - the bottom of the air filter housings interchange between the engines, and probably from F to E-series. But after, or above, that they are different.

Having said that, I do have some F-Series 460 EEC-IV intake air stuff. That should be dual air tubes running from the top of the air filter housing to the throttle body, where the EEC-V has incorporated a MAF sensor so it is a single hose back to a wye where it goes to two hoses for the throttle body.

[Gary Lewis]

I don't have documentation, like the MPC, for anything after 1989 so can't give part numbers. But from my limited experience I think your info is correct - the bottom of the air filter housings interchange between the engines, and probably from F to E-series. But after, or above, that they are different.

Having said that, I do have some F-Series 460 EEC-IV intake air stuff. That should be dual air tubes running from the top of the air filter housing to the throttle body, where the EEC-V has incorporated a MAF sensor so it is a single hose back to a wye where it goes to two hoses for the throttle body.

My first cuppa hasn't kicked in yet either. But it is starting to, slowly. I do have info that may well help as the 460 was EFI'd before the end of my MPC, and little changed before the 460's demise.

I've purposefully made these pics as large, filewise, as possible to maintain as much detail as I can. So tell me what part numbers you need from this.

Here's the E-Series:

And here's the F-Series: