Thread: Making more rpm
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Old Sep 4, 2006 | 12:21 PM
  #3  
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Big Will_
Borg Warner EFR Equipped!
 
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From: In the unit, building a 450bhp Time Attack Focus!
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As Dan said - many things mate... Rodbolts, crank and the head are the main places to look...

Cam durations and lifters/springs need all to work together
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