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Old 02-04-2013, 01:30 PM   #1
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5.4L Rebuild

Sunday I picked up a 5.4L short block from bottlefed04. My plans are to do a rebuild. I have a local guy thats going to do all the machine work. Right now Im debating between forged or cast internals. I dont have very much money to fund this project but I dont want to regret it in the future. My goals are around 300hp wih around 340tq on a N/A setup. I want to have the option to run 8psi of boost later down the road. Would cast internals do fine with that?

Thanks for any help and I plan to keep everyone posted on this build.
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Old 02-04-2013, 05:27 PM   #2
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If you want reliable boost you really should forge it. Cast guts will give you the 300/340s you want though. Check out modmax racing. Their 5.4 rotating assemblies are relatively cheap.
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Old 02-04-2013, 06:47 PM   #3
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Originally Posted by AgentOrange View Post
If you want reliable boost you really should forge it. Cast guts will give you the 300/340s you want though. Check out modmax racing. Their 5.4 rotating assemblies are relatively cheap.
What's the limits of cast internals?
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Old 02-04-2013, 06:50 PM   #4
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What's the limits of cast internals?
4.6 is supposedly around 350 RWHP.
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Old 02-17-2013, 04:18 PM   #5
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Moving forward, got the internals out last week and today picked up some PI heads that have been rebuilt and ported.
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Old 02-19-2013, 06:28 AM   #6
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You can run 10lbs on stock internals man. But if doing a rebuild just go forged. So when you you want more power just run more boost and not worry about it
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