Sleeving 340 for a Stroker kit

RustyRatRod said
The 348 and 409 engines have cylinder heads that don't have a combustion chamber, kinda like a diesel. The chamber is the top part of the cylinder. The way it's designed, it has to have a valve relief in the block.
Here's Edelbrock's version. The stock one is similar.
View attachment 1716342374

Here's a shot of the chambers in the block. You can see the reliefs for the exhaust valves.
View attachment 1716342375

Ii ask steve if he ever did a 348 or 409. He did , I must have missed it. Must have been when I was laid up. I would have remembered that weird block.