Rocket block

Discussion in 'Tech Questions' started by Robin D Rogerson, Jan 27, 2020.

  1. Robin D Rogerson

    Robin D Rogerson New Member

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    Good Evening, Is it safe to take a rocket block out to 4.20 ? will there be any life in it after that ? Thanks in advance for the help.
     
  2. Keith Rittenberry

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    Rumor has it (and I also read it somewhere) that Dart built the rocket block for GM. The rocket block and iron eagle are identical in specs as far as I can tell. Being they are both 4.4" bore spacing blocks, with Dart saying 4.185" is the largest recommended bore for the iron eagle, I'd say don't go to 4.20". You would only have .200" between any two holes [on one side of the block (to keep the dogs at bay)].
     

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