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Old 09-20-2018, 08:53 PM   #4
'68OrangeSunshine
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Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 7,054
Re: 68 gmc engine perch location

Check the SPID.
CS = 2WD L6
CM = " V6
CE = " V8
If the SPID doesn't list displacement as a 327 or 350 V8, then it was a 307. Or a 250 if it was an L6 truck.
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