bolt sizes

Old 12-01-2010, 04:55 PM
  #1  
cervidog
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Default bolt sizes

I have en early 70s 400 sbc and I am wondering what size and thread pitch the head and crank main cap bolts are ?Thanks Tony.
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Old 12-01-2010, 08:48 PM
  #2  
zipper06
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7/16" X14 pitch, mostly 5/8" head size, but some are 13/16 head dia.

Zip.
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Old 12-09-2010, 06:49 PM
  #3  
cervidog
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Thanks Zipper06,I want to freshen up the engine this winter and will need some taps and thread chasers.[/list]
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