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HDDAN · 02-10-2011, 06:49 AM

Because a Z-28 has always been a lower model than an SS. The original ZL1 was a 1969 427CI engine.

02-10-2011, 06:49 AM	#5
HDDAN Drives: 2010 Camaro 1SS 2007 HD FLSTC Join Date: Aug 2009 Location: Boston MA Posts: 1,510	Because a Z-28 has always been a lower model than an SS. The original ZL1 was a 1969 427CI engine.