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Old 12-09-2018, 09:36 AM   #1
cavedog309
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Join Date: Sep 2016
Location: Harrisburg, Pa
Posts: 16
ZZ3, Gen I, II, III ????

We picked up a Good Used ZZ3 Short Block with Roller Valve train. Is this motor a Gen I , Gen II is it a Vor tec ? We want to use Aluminum Cylinder heads and upgrade the camshaft . Was familiar with the older 283,327 engines but kind of confused. Any information would be greatly appreciated.

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