Mo in NE tex
Member
I have been installing a C-153 engine in my Grand-daughters "B" Farmall and ordered a aftermarket manifold that would fit that engine. Upon arrival, it's the same size as the original "B" manifold. The 153 manifold has a 1 1/3" throat verses a 1" for the "B". I went ahead and put the new manifold on and the "B" carb, and it runs good. Question is, will the larger manifold and carb make that much difference in power? The larger manifold exhaust out the rear so would have to do some modification to get it thru hood like original. Also, the exhaust size is the same on both manifolds, just the intake size is different. What are your thoughts?