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Most Streetable HP from a 289? Most Streetable HP from a 289?
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Old 03-25-2006, 04:39 AM
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It depends on if you want to stroke the motor. 375 is reasonable for a 289 with AFR 165 heads. Put a 3.250" crank in it and stroke it to a 331, use AFR 185 heads, and 425 HP is entirely reasonable and streetable.

Kevin
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