[Tim Ayers]

The 5th and final block that I tore down to use for my current engine was a 59L with factory relief. It's interesting for that cut was pretty crude when inspected up close.

As noted in another post, it will be a 297 c.i. and the plan is to get 8-1 compression.

I've always liked the look of those dual plug heads. There are two different designs that I've seen. Side by side like the heads in the OP picture and aligned vertically. Curious how the placement of the dual plugs makes a difference.

I think some Eddie Meyer heads were cast with a "boss" to allow someone to weld up the stock, centrally located plug location and tap two new ones.