Help w/ holly carb demensions

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05-22-2009, 07:22 AM

*86EYEROK*

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Help w/ holly carb demensions

was woundering if some could tell me if the 750cfm and the 650cfm Double pumper carbs are the same in demensions. what i mean is if i switch from a 750cfm to a 650cfm carb will my double feed gas line hook right up or will i have to shortin it to line up with the inlet holes. thanks

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05-22-2009, 08:37 AM

Damon

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Re: Help w/ holly carb demensions

It'll swap right over.

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05-22-2009, 10:54 AM

five7kid

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Assuming they're both 4150 models. If the 750 is a 4160, you'll have to lengthen the line.

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05-22-2009, 02:06 PM

*86EYEROK*

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Re: Help w/ holly carb demensions

actually its the 4779 750cfm DP..so the inlet for the fuel from one inlet to the other is wider on the 650cfm?

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05-23-2009, 09:14 PM

Air_Adam

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Re: Help w/ holly carb demensions

If your 650cfm is a #4777 and the 750cfm is a #4779, then all the external dimentions are identical, as are the fuel line fittings, vacuum hookups, choke parts and throttle/secondary linkages.