Thread: custom heads
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Old Jul 14, 2014 | 12:15 PM
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boostmonkey
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Originally Posted by austinbarrylee
500 HP??!! I would love to see that one. Jim has the fastest xf.
I'm getting there. 409 at the rear wheels. 493 at the crank if you want to figure 17% drivetrain loss guesstimate.
 
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