Ron, The 56 WCFB carbs had a square bolt pattern on the base. The 57 WCFBs had a larger rectangular bolt pattern. To use your stock 56 2x4 carbs, you should be able to use a base gasket as a template to drill and tap new holes for the square base pattern. I think the 57 WCFB rectangular pattern is the same as the AFB in 58. Remember that the part number in the book is NOT always the same as the casting number on the part. A casting sometimes could be machined in more than one way and have different numbers assigned to the finished part. Dave Homstad 56 Dodge D500 -----Original Message----- From: Forward Look Mopar Discussion List [mailto:L-FORWARDLOOK@xxxxxxxxxxxxx]On Behalf Of Ron Allyn Swartley Sent: Saturday, April 10, 2004 10:58 AM To: L-FORWARDLOOK@xxxxxxxxxxxxx Subject: [FWDLK] QUESTION FOR YOU ALL= BASE SIZE OF CARBS Hi Question for you all? Is there a difference in the base size of the 56 and 57 two four manifolds carburetors and the 58 Fury 318 manifold carburetors size? My book shows they both take part number 1732479 however I have a factory cast iron manifold for two four carbs that has the part number 1822004 and the stock 56 carb will not fit it??????????
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