Carb question, will it fit?
Laughing Gas
Joined: Feb 2010
Posts: 781
Likes: 8
From: Sanford, NC
If you have a stock Ford 4V intake you might have a problem if the 650 has larger
secondaries than the primary side. The stock Ford intake is made for a 4180 Motorcraft
Holley in which the primaries and secondaries are the same size. See if you can find a
carb to manifold gasket for your stock application and see how it fits to the manifold
side of the 650. This might save you some trouble.
secondaries than the primary side. The stock Ford intake is made for a 4180 Motorcraft
Holley in which the primaries and secondaries are the same size. See if you can find a
carb to manifold gasket for your stock application and see how it fits to the manifold
side of the 650. This might save you some trouble.
Senior User
Joined: Dec 2003
Posts: 242
Likes: 0
From: Westerville, OH
The 4165/4175 spreadbore Holleys are 650cfm Quadrajet replacements IIRC. You can get a 3/4" thick or so adapter to fit on a square bore manifold, I've seen them as little as $13. Or you can find a GM guy somewhere who wants it and has a 4160/4180 you could use.
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