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Old 03-16-2008, 04:49 AM   #1
69heavychevy
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edelbrock performer rpm???

i was cleaning up the manifold before it went back on the truck. i started picking at what i thought were clogged coolant passages on the rear. well it turns out the are actually blocked off. i found when i started drilling and hit a aluminum wall. are they supposed to be like this?
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Old 03-16-2008, 05:01 AM   #2
wibilly
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Re: edelbrock performer rpm???

there are no coolant passages on the back of the manifold
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Old 03-16-2008, 05:13 AM   #3
69heavychevy
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Re: edelbrock performer rpm???

oh, i just figured there was since there is some on the heads

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Old 03-16-2008, 05:18 AM   #4
berencam
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Re: edelbrock performer rpm???

yup mines the same way.
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Old 03-16-2008, 05:28 AM   #5
71big block
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Re: edelbrock performer rpm???

The heads have the holes on each end so that they can be used on either sidem intakes only have the cooling passages on the front
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