Thread: 1970 XF block
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  #4  
Old 08-10-2025, 01:37 AM
Dragncar Dragncar is offline
Ultimate Warrior
  
Join Date: Mar 2004
Location: Humbolt County California
Posts: 9,232
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I ran a 455 at over 500 HP for decades. No line bore, no decking. The last 10 years it had main studs and I did not align hone it. Just ran it and nothing bad happened.

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