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Old 09-15-2012, 01:15 AM   #1
SnS C10
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what is this from?

hey guys im thinking about putting this intake on my 350 when i rebuild it. its a gm part. aluminum dual plane. any idea as what it is from and if it will increase performace over my stock cast iron manifold?
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Old 09-15-2012, 01:22 AM   #2
HotRod C/10
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Re: what is this from?

is there a part # on it?
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Old 09-15-2012, 01:22 AM   #3
geezer#99
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Re: what is this from?

It's just an aluminum version of the cast iron one. No difference performance wise.
IIRC they came on some 305's.
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Old 09-19-2012, 11:36 AM   #4
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Re: what is this from?

I have a mid seventies 350 with 882 heads and the stock cast iron intake and q jet carb. Will this manifold bolt up with no modifications in place of the cast iron?
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Old 09-19-2012, 11:44 AM   #5
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Re: what is this from?

the only difference I know it is a bit lighter
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Old 09-19-2012, 12:27 PM   #6
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Re: what is this from?

Ok my cast iron manifold is pretty best up and guy I bought the truck from gave me this one so im hoping it fits without a problem.
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Old 09-19-2012, 12:55 PM   #7
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Re: what is this from?

It's lighter and will disapate heat better. I'd put it on if I had it.
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Old 09-20-2012, 12:13 AM   #8
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Re: what is this from?

Quote:
Originally Posted by rollinhard View Post
It's lighter and will disapate heat better. I'd put it on if I had it.
x2
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Old 09-20-2012, 12:35 AM   #9
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Re: what is this from?

Ok thanks guys I will be swapping the manifold in about a week once I get the heads and block cleaned up. They both have a lot of blocked openings on the water passages which basically blew my head gaskets and put water in the oil.
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Old 09-20-2012, 11:18 PM   #10
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Re: what is this from?

I replaced the cast iron version on my 454 with a performer. Went from sluggish to a neck snapping tire roaster. Runs SO much better in general.

I suggest getting rid of it...particularly if you are running a square bore, like a Holley. That one is designed for a spread bore (Q-jet).

The only disadvantage with the modern manny is it doesn't look original.
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