Quote:
Originally Posted by Herb Concord Ca
With my 5.9 Brumfield head I run a Marvel. I suppose a Model B carburetor would be also.
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Quote:
Originally Posted by Herb Concord Ca
Second sentence show read, I suppose a Model B carburetor would be good also.
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Herb, you are on the right track. The Model-A carburetor bore size is almost 1 inch in diameter, -and the Model-B is 1¼" ...which is a great gain in airflow however a Model-A intake manifold has a 1.000" rough-bore draw tube whereas the Model-B intake manifold is 1.250". Bolting the larger carburetor onto a restricted manifold really does not gain anything. The Model-B intake can be modified for use on a Model-A engine however the better alternative IMO is to bore the inside to at least 1.250" to utilize the air flow gain of the Model-B carburetor.