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The aluminum heads are not the problem there. Most new vehicles all have aluminum heads. The aluminum heads are going to be considerably lighter as well as dissipate heat faster. You don't need headers to take advantage of the benefits of the aluminum heads.
Mustang sports cars fine !
But if your pulling 20, 40,000 lbs all the time (F-250) 5.4L your gonna get screwd. i have seen it happen before 100,000 miles after cool down time with 5.4L
Making the motor more efficient will help your fuel economy.
It just seems to me the a motor the is modified is going to use more fuel than a stock motor of the same type. I also don't want to have to run supreme fuel. Im worried that I will have to do that. I already have to run mid grade or it pings with the AC on on the highway. Its always done that. So, did my other 95 F150 with 4.9 and 89 Mustang LX. They all needed 89.
TexasGuy, you must have money to burn if you are willing to spend the change to get a Ford motor installed by a dealership. What's that going to cost you, like $5k?
I don't blame you for wanting to avoid the cheap parts store motors. They are junk IMO. But the perception that there are only cheap parts store motors and Ford-built motors is like saying you can only drive a Geo Metro or a BMW. There's lots of good stuff in between.
So here's what you should do. Ask around and find a local engine rebuilder. Visit the shop, talk to the guys, ask for a tour, see what they do and how they do it, talk to them about what you want, and they will build up a motor for you, install it, and give you a warranty. If there are any problems you can take it to them. It will cost less than half what you will end up paying the dealership.
I don't really want to spend big bucks, but I don want it done right and don't want to have to redo everything the day after the 12 month 12000 mile warranty expires. I'd like to go 300k miles on the next motor.
Thats the problem though. I don't want anything to do with the local engine builders that I have met.
Also, The local gear heads or shade tree mechanics that I know either build their own or have taken it to a local guy and have nothing good to say about the shop they went to. Thats really all I hear is bad things unless its one of the handful of good hot rod shops. In that case they have no interest in building a stock motor, they want you to build a race motor or close to it.
I just want to keep the truck like it is only freshened up. I also want the warranty and to be able to take it back if there is a problem.
I can't believe the Ford factory motor is 5k just for the engine itself. You can get 302 based motors from Ford Racing for 6 or so. I was told that the factory remanufactured motor is 3500.
imo, if your going to spend 5k on a motor, and it doesnt have aluminum heads, or at least some decent aftermarket iron heads, then you got hosed.
I don't consider it getting hosed if it will go 300,000 miles like the original motor did. I don't think any of the modified motors will last for that many miles. I could be wrong though.
I might conisder running GT40 iron heads, but Ford Racing no longer offers the crate motor with that combination.
I don't consider it getting hosed if it will go 300,000 miles like the original motor did. I don't think any of the modified motors will last for that many miles. I could be wrong though.
I might conisder running GT40 iron heads, but Ford Racing no longer offers the crate motor with that combination.
nothing against what your saying here, but a 300k mile motor isnt something you see everyday. I for one have not had a factory motor last me more than 200k miles, but i am fairly hard on my stuff, and the fact of the matter is..its only a factory motor once.
With that being said, look at what the police rely on day in and day out, aluminum headed 4.6L motors, and those get run to 300k miles all the time, they have little to no issues. Any nonsense you may or may not have heard about aluminum head reliability is just that, nonsense, the aluminum heads produced in the aftermarket are actually far superior quality to those that ford spits out on the 4.6/5.4 motors. Nothing against it if you want to keep iron heads, but aluminum heads will actually let you run more compression on a lower octane gas btw.
If your not looking for a whole lot more power, than some aftermarket iron heads might be the ticket, but like you said, most crate motors come with aluminum heads now, which isnt necessarily a bad thing, but if your dead set on iron heads..then i guess you wouldnt want that. Just my .02
I posted about this some time ago but can not find the thread.
I am now in the planning stages for what I want to do to rejuvenate my 95's engine. It still runs great, but its getting really high in miles.
I would like to get a factory replacement engine, but have heard from several people that it is no longer available through Ford. One Ford dealer I called said the same thing.
Does anyone know what the real options for a dealer installed crate motor? If so, what would the part numbers be for my truck? Is more information needed than my signature?
I'm not sure exactly how soon I am going to do this, but just want to know what I can get.
But if your pulling 20, 40,000 lbs all the time (F-250) 5.4L your gonna get screwd. i have seen it happen before 100,000 miles after cool down time with 5.4L
First of all, the 302 is a pushrod motor whereas the 5.4 is an OHC motor. Those comparisons are not fair to begin with.
So obviously the GM LSx series motors must be gigantic piles then seeing as they all have aluminum heads. The Hemi also has aluminum heads.
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