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99 F150 engine rebuild

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Old Jul 14, 2017 | 05:16 AM
  #1  
Trazkiru's Avatar
Trazkiru
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99 F150 engine rebuild

I have a 99 F150, with the 4.6L V8. it has a little over 146k miles on it. runs good, its been a reliable truck. Im curious about rebuilding the engine. Previously it was thought about returning to stock condition. but then I thought hell if Im tearing it apart I should just beef it up and add onto it. Any advice on it? should I rebuild and add on? or scrap that idea and drop a ready to go engine. thanks
 
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Old Jul 14, 2017 | 06:02 AM
  #2  
enriched&beyound's Avatar
enriched&beyound
Fleet Mechanic
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From: NE Iowa JD Country
Originally Posted by Trazkiru
I have a 99 F150, with the 4.6L V8. it has a little over 146k miles on it. runs good, its been a reliable truck. Im curious about rebuilding the engine. Previously it was thought about returning to stock condition. but then I thought hell if Im tearing it apart I should just beef it up and add onto it. Any advice on it? should I rebuild and add on? or scrap that idea and drop a ready to go engine. thanks
Really depends on what your use is going to be with the truck?

Just better all around performance? or you intend to do more or improve towing? Or running towards the upper end of the RPM?

One thing that might help is to make sure you have the updated heads on it. Later v8 engines of this generation had PI heads( power improved) and thicker sparkplug threaded areas. You might have them but think they didn't come out until 2000?

If it just for general driving then I'd probably go with a crate engine and be done.
 
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Old Jul 14, 2017 | 06:20 AM
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formerjeepguy
Mountain Pass
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If it runs good then why rebuild? A lot of people get 300k miles out of these engines.
 
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Old Jul 14, 2017 | 07:05 AM
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Trazkiru
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I guess it's not so much a rebuild as an overhaul. Just better performance mostly. I don't care for the whole racetruck thing. Just a better truck in general.

it does run really good. The trans has just recently been rebuilt so that's why I've been wanting to bring the engine up in power.
This all comes after I've been fixing and cleaning up the body and frame and other parts. So it's more of a "make the whole truck better" kind of deal
 
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