engine change

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Old Mar 31, 2003 | 11:06 PM
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slick-001's Avatar
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From: peru,Ind. usa
Question engine change

Have a question about engine change. I have a 99 ext cab with the 4.2 with Gibson ext. and k&n intake. Have 3.08 rearend. and a 5sp. going to change rearend to 3.55 posi. soon.
Love the truck and will not change the engine till it is dead, but when it is I want to change to a 4.6. The truck weights to much to make much of a dif. with mods. so was wondering how much trouble to change over to a 4.6? Its my choice cuz the 5sp. should match up, a 5.4 I'm told won't.
would like to know how much trouble it would me and all the things I would need to make the change. Thanks[

https://www.f150online.com/galleries...w.cfm?num=2065[/url]
 

Last edited by slick-001; Mar 31, 2003 at 11:09 PM.
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Old Apr 1, 2003 | 01:19 PM
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f1504fun's Avatar
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From: Indy
Re: engine change

Originally posted by slick-001
Have a question about engine change. I have a 99 ext cab with the 4.2 with Gibson ext. and k&n intake. Have 3.08 rearend. and a 5sp. going to change rearend to 3.55 posi. soon.
Love the truck and will not change the engine till it is dead, but when it is I want to change to a 4.6. The truck weights to much to make much of a dif. with mods. so was wondering how much trouble to change over to a 4.6? Its my choice cuz the 5sp. should match up, a 5.4 I'm told won't.
would like to know how much trouble it would me and all the things I would need to make the change. Thanks[

https://www.f150online.com/galleries...w.cfm?num=2065[/url]
Wow! thats a project , Wiring harness to me would be a nightmare. The physical swap would probably go ok once the motor mounts & tranny were checked out for compatibility.
Of course you know this is going to be
$$$$ Sure you want to do this, another truck would be less hassle.
If you do it, keep us posted...
 
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Old Apr 3, 2003 | 07:42 PM
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I know that it is going to cost some $$$ but the truck will be paid for by that time and I thought it wouldn't be to hard if I found a 4.6 truck in the wrecking yard to get engine and the wireing harness and computer. Don't know just a thought. Don't think I could use my harness I have and just get a new computer??
Any thoughts on this would be helpful. Have a lot of time to think on this 4.2 is going strong and will probaly stay together for 150,000 miles got about 58,000 on it now.
 
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