Quote:
Originally Posted by caddor38
Okay Everyone!
Here is proof from General Motors Pontiac out of their 1971 Service Manual.
The 1971 Service manual as captured in the pictures shows the YC motor was an HO.
This is indisputable evidence from the manufacturer.
Page 6-6 YC motor is an HO
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Look at it closer that’s the same thing I posted that’s a + not a cross next to the YC