Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

5.0 motor build

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Old Feb 4, 2009 | 05:40 PM
  #11  
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my77stang
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being balanced is very important btw
Old Feb 4, 2009 | 07:51 PM
  #12  
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Boxxy is one fine looking troll
Old Feb 5, 2009 | 04:39 PM
  #13  
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yeah its going to be a weekend warrior.I have another dd
Old Feb 5, 2009 | 04:51 PM
  #14  
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Originally Posted by mat11089
those shackles are 65-68 it looks like....ok so 450 is an ok amount to put through the block and bottom end consistently?
A better question is, how are you going to get 450hp out of it? Supercharger? That's a tall order on a non-race naturally aspirated 5.0, especially if you want to keep the rpm's under 7k.
Old Feb 5, 2009 | 05:15 PM
  #15  
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450hp can be had with a fairly conservative package, 450 to the wheels is a different story. I played around on dynomation for a minute, with our AFR 185 flow numbers, a .550/254I266E hyd. roller cam, 331 stroker config., and our flow numbers from a ported Air-Gap intake it came out to 442hp at 6k and 451ft. lbs at 4k with 297ft. lbs at 800-1k rpm idle. On street motors the margin of error is around 3-5% +/-.

Anything is possible, you could do anything from stock, the build I layed out, or a D3 headed 305 race engine thats putting out 725 at the crank. In all honesty though if your looking for a cruiser 450 at the crank will give you all the power you need for the street and some you probably won't even use.
Old Feb 5, 2009 | 05:18 PM
  #16  
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I said 5.0, not 331 Strokers are a different story (and why I have one, hehe).
Old Feb 7, 2009 | 02:48 PM
  #17  
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well im in luck then cuz Im looking for 450 at the crank and Im making it a 347. Its not my first rodeo.Ive done a few motors and full car builds at the hot rod shop I used to work at so Im pretty confident I can achieve this but Im definitely open to any ideas. thanks again guys
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