Help w/ holly carb demensions

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May 22, 2009 | 07:22 AM

*86EYEROK*

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From: Endicott, NY

Car: 1986 IROC-Z

Engine: 420HP ZZ4 350

Transmission: TH350

Axle/Gears: 4:11's

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

May 22, 2009 | 08:37 AM

Damon

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From: Philly, PA

Re: Help w/ holly carb demensions

It'll swap right over.

May 22, 2009 | 10:54 AM

five7kid

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From: Littleton, CO USA

Car: 82 Berlinetta/57 Bel Air

Engine: L92/LQ4 (both w/4" stroke)

Transmission: 4L80E/4L80E

Axle/Gears: 12B-3.73/9"-3.89

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

May 22, 2009 | 02:06 PM

*86EYEROK*

Thread Starter

Member

Joined: May 2009

Posts: 156

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From: Endicott, NY

Car: 1986 IROC-Z

Engine: 420HP ZZ4 350

Transmission: TH350

Axle/Gears: 4:11's

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?

May 23, 2009 | 09:14 PM

Air_Adam

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Joined: Oct 2002

Posts: 9,067

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From: Saskatoon, SK, Canada

Car: '83 Z28, '07 Charger SRT8

Engine: 454ci, 6.1 Hemi

Transmission: TH350, A5

Axle/Gears: 2.73 posi, 3.06 posi

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.