Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. |
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#1
02-18-2005, 05:29 AM
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Re: ZL1- ENGINE HELP
Yenko blocks if i'm not mistaken on this, only had YENKO on them. I never saw a crested block like that one. Also, yenko blocks had freeze plugs where the ZL1's had the 1/2 inch drive screw type plugs. Hope this helped!
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COPOJOE 427 
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#2
02-18-2005, 06:19 AM
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Re: ZL1- ENGINE HELP
I believe the Yenko blocks were a Baskin-Robbins kinda deal, lotsa flavors...short deck or tall deck, press-in or screw-in freeze plugs, Yenko crest or lettering...not sure on the '97 cast date, that's kinda screwy, especially with the crest.
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#3
02-18-2005, 12:11 PM
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Re: ZL1- ENGINE HELP
That wouldn't happen to be the ZL 1 block that was for sale at carlisle a few years back? I remember seeing a 427 aluminum block with the yenko crest on it. Big dollars. I saw the motor for sale there a couple of times. If I remember Marlin was with me. Not sure what the castings were.
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70 yenko deuce; orange YS#127
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#4
02-21-2005, 03:04 PM
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Re: ZL1- ENGINE HELP
This Yenko-block was bought in Texas in 1984, according to the German guy that bought it. It has screw-in type freeze plugs, and the crest.
Anders
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Anders Stålklint. After selling my COPO 9561 I´m now a "postman" with the main project being a 1966 327 2 dr sedan Chevy II. 
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