Indri Posted March 25, 2011 Share Posted March 25, 2011 I bought a 350 swapped 240 and saw ZZ on the valve covers. First and foremost, from what I've read on the internet, ZZ motors are crate engines that put down ~345hp. How can I tell if it's a true ZZ motor? Second, how can I tell which ZZ motor it is? Quote Link to comment Share on other sites More sharing options...
johnc Posted March 25, 2011 Share Posted March 25, 2011 I bought a 350 swapped 240 and saw ZZ on the valve covers. First and foremost, from what I've read on the internet, ZZ motors are crate engines that put down ~345hp. How can I tell if it's a true ZZ motor? Second, how can I tell which ZZ motor it is? http://www.joesantiquecars.com/Chevrolet-engine-block-casting-numbers.html http://www.yearone.com/yodnn/tech/vehicleinfodecoding/chevroletdecoding/chevroletenginecodes/tabid/322/default.aspx http://www.chevy-camaro.com/chevy-camaro-engine-codes.asp Quote Link to comment Share on other sites More sharing options...
Indri Posted March 27, 2011 Author Share Posted March 27, 2011 Thanks, JohnC. Turns out I have a 400 small block. The PO just put on ZZ valve covers. I never knew how to read the engine stampings. Great links! Quote Link to comment Share on other sites More sharing options...
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