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Stream Holes

943 views 0 replies 0 participants last post by  Joe 
G
#1 ·
I just purchased some Edelbrock 60229 for my '67 Mustang. It appears that I
have an early 289 and must drill some steam holes. According to Edelbrock I
should only drill holes on the number 1 and 5 cylinders. I'm wondering why
I shouldn't drill eight stream holes since the old ones at the top of the
cylinders will be covered. What exactly is their purpose?
 
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