COPO ZL1 with the yenko performance pakage.

[mrays]

Please correct me if I'm wrong, but I did some research online on the Yenko ZL-1 blocks and everything I found said they were cast from 1975 to 1987. I believe Don wanted them for Can Am racing and GM had quit casting the blocks so he bought the tooling from them. I was looking into this because of a 69 Camaro that the owner said was a COPO that Yenko installed a Yenko ZL-1 block in. I don't think the car was a real COPO and if Yenko did install the block it wasn't done in 69 like the owner said.