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Long Bed Member
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3,065 Posts
alrighty the 8th digit into the vin will either be
Z: tbi
or
W: cpi
but even so the visual difference is huge the tbi will look almost like a carb. and have a round air cleaner, the cpi or votec motor will have a large upper intake that doesnt resemble the tbi at all and it should say "vortec" on the top of it , hope that helps
 

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Long Bed Member
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3,065 Posts
yeah all the cpi's should be vortecs and i dont believe they made them till '93 possibly late '92.
 

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132 Posts
CPI

'92-95
 
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