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Holley 4175 Spreadbore ?

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December 3rd, 2011 | 08:06 PM

#1

yankees

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Joined: Sep 2011

Posts: 357

Holley 4175 Spreadbore ?

Does anyone know what the lever that opens and closes something (that I'm not familiar with) on the primary fuel bowl is used for? See the attached pic

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December 3rd, 2011 | 08:09 PM

#2

Oldsmaniac

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Joined: Oct 2005

Posts: 7,119

From: NJ

It appears to be a vent for the bowl similar to what the quadrajet uses.

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December 8th, 2011 | 08:50 AM

#3

yankees

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Is the lever and contraption even needed since the there is already a bowl vent tube (one for pri and secondary bowls) that sticks up on the main body.

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December 8th, 2011 | 08:59 AM

#4

Rickman48

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Joined: Sep 2010

Posts: 3,057

From: Shorewood, Il.

Wouldn't be there if not needed!
Those spread-bores were very finicky - don't mess around with it too much!
I got a brandy new one in my storage - don't know which one, though.

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