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Correct me if i am wrong but i thought that only the ZL1's came with the ALL alum motors and the copo's which the yenko's were the iron block with the alum heads??? I think it is a fake.. i could be wrong??????
 

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Discussion Starter #4
69CamaroRacer, that was my first thought too! I have never seen one with "Yenko" cast into it. Then again, I haven't seen all that many all aluminum 427's! Anyone know anything about this?

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67 BB RS, M22
 

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Yenko bought the rights to cast the ZL-1 blocks for GM. This engine isn't out of an original ZL-1; it would be a counter replacement built in the 70's I believe or available over the counter from Yenko and assembled as a ZL-1 style motor.

I also have one of the Yenko aluminum blocks in my 69 although it's stamped into the block, not cast; this was what I was told.

Clill, what's the true story?

Jody
 
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