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.

7/16" X14 pitch, mostly 5/8" head size, but some are 13/16 head dia.

Zip.

Thanks Zipper06,I want to freshen up the engine this winter and will need some taps and thread chasers.[/list]