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Author Topic: Offenhauser Port O Sonic intake  (Read 10626 times)
phil k
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« on: August 18, 2010, 03:10:49 pm »

I'm currently rebuilding my 351c 4v and te engine is fitted with an Offenhauser Port O Sonic intake manifold. I imagine this is quite an old design but was just wondering how it stacks up to todays crop of intakes.
The heads on my engine have been fully ported and the intake has been ported to match the heads. The carb is a custom built Proform 750 main body with quick fuel metering blocks.

Any info or feedback on this intake would be great.

Thanks in advance

Phil

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BirdMan
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« Reply #1 on: August 18, 2010, 03:32:26 pm »

I had one on my 289/302, it flowed good and was better than a VicJr.  Used it for years.
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scienceguy
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« Reply #2 on: August 18, 2010, 11:16:59 pm »

The Port-O-Sonic isn't a bad intake.  I ported a 351C unit, and liked it. 
The 289/302 unit isn't bad either.  It's kind of a mini Victor Jr. 
The 302 Victor Jr. didn't come out until around 1991, and before that, the Port-O-Sonic was the best available.  However, it's really rough right under the carb flange and definitely needs some 'love', but it's not a bad piece to work with....  especially in the days before the Vic Jr.

Good Luck!
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tiger260
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« Reply #3 on: December 28, 2010, 03:08:00 pm »

Hallo there,

I know its a old thread.
But, one question:
Is the port o sonic "bigger" than a x-cellerator? Both for a 302.
Or do they have the same runnersize?

Thank you
Hans
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Fordota
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« Reply #4 on: December 28, 2010, 03:27:33 pm »

You could add in the Torker/Torker II in the question as well  Wonder, Ponder
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skip02
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« Reply #5 on: February 17, 2011, 10:49:28 am »

like the torker
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BirdMan
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« Reply #6 on: February 17, 2011, 12:27:29 pm »

The Torker II is not in the same ballpark as it is flatish, small runners and is definitely lopo.
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