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Old 04-01-2016, 03:18 PM
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Default What is this S here?

S ='s Stuff! What's the baseplate from? Plates are stamped 172.

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  #2  
Old 04-01-2016, 03:40 PM
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Default Re: What is this S here?

Do you mean the butterflies are stamped 172?
Think those came std. on a Holley 750/800 doublepumpers.
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Old 04-01-2016, 08:07 PM
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Default Re: What is this S here?

Yes, the butterfly plates. Is it a '70+ version with the large vacuum port?
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Old 04-02-2016, 02:19 AM
Kurt S Kurt S is offline
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Default Re: What is this S here?

I just went through this with some baseplates that I have.
What's the numbers stamped and cast on the plate? They are probably on the corners nearer the throttle lever.
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Old 04-03-2016, 03:17 PM
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Default Re: What is this S here?

Looks like a 3310 vacuum secondary
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