2005-2014 Mustangs Discussions on the latest S197 model Mustangs from Ford.

4.6 Block info

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Old Jun 20, 2007 | 11:25 PM
  #1  
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blitzed589
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Default 4.6 Block info

Up to what hp is just the block good for? Not worried about internals.

Old Jun 20, 2007 | 11:26 PM
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Default RE: 4.6 Block info

I would love to know this as well
Old Jun 21, 2007 | 12:02 AM
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Default RE: 4.6 Block info

i would love to know because i want to upgrade my internals and push it to 650-700 rwhp
Old Jun 21, 2007 | 01:04 AM
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Default RE: 4.6 Block info

With forged internals you can only go up like 600 i think it was.
Old Jun 21, 2007 | 01:22 AM
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Default RE: 4.6 Block info

I read somewher the block itself is good up to 700 or 800 hp but that is awhile back i could be wrong
Old Jun 21, 2007 | 12:35 PM
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Hmm ... wonder where we could find this out for sure... or first to blow after forged knows .. ha
Old Jun 21, 2007 | 12:56 PM
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Default RE: 4.6 Block info

from what I've read... block is good for 700-800 as mentioned above.... its the interanls letting go in the 475+ range that break the block.... forged interanls good for 600-700 and you block has nothing to fear....
Old Jun 21, 2007 | 07:02 PM
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Default RE: 4.6 Block info

So then no one is 100% sure what the block is good up too?
Old Jun 21, 2007 | 07:17 PM
  #9  
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Bump...
Old Jun 21, 2007 | 07:31 PM
  #10  
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Default RE: 4.6 Block info

A guy who does allthe work on my car said 1000hp. hes been building engines for 6 years and is passion is mustang SO i believe him. hes putting in my internals



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