ZL-1 Camaro engine casting dates

[GMH454]

Berger please take this the right way but your last post may need some clarrifying.

The first Can Am style alloy blocks are probably VERY similar to ZL-1s, talking here of Halls Chapparal etc. We are talking VERY rare, and unclassified

The original 052s which we call ZL-1s had no water jacket between bores and the block is actually very diferrent from a cast iron L-88 block. Looks very different too. Mine has what looks like dry sump plumbing hanging off the side.The main similarity is in dimensions. 052 blocks should run liners, and should with the right cam be good street engines. Because they will run slightly cooler detonation should be helped a little.
There is also a 4.440 bore Can Am block used briefly that was also a linered block and from 356 alloy

What is usually referred to as a Can Am block, are the Reynolds blocks, that on a 3.76 stroke are around 465cubes'with 4" 495 cubes. The Green Book refers to these as 390 Alloy. (O52 blocks are by contrast 356 alloy.
These had no liners, the pistons had iron coatings. I think Jenkins had one in his 1970 Camaro.