Re: Any idea WHAT this block is?
Stan, My understanding is that the ZL1 and the CanAm block are different castings. The ZL1 is similar to the iron BB design and has "wet" liners meaning coolant passes in between the adjoining cylinders. The CanAm block has a 4.440 in. dia. bore with Siamese cylinder design (like the 400 SB) where coolant does not pass between adjoining cylinders (dry liners). The other CanAm block has no liners and used a special coating on the pistons to control wear.
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