Difference between FD and GE block

[Nick B.]

I have an old block from a herald in the basement. Can this be used to build a Spit engine?

I know that herald cams runs directly in the block whereas spit cams runs in bearings. Is this the blocks that are different - or is it the cams?

Regards
Nick

[Deleted User]

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[Deleted User]

post removed on request of author