Quote:
Originally Posted by Quigley
They do not block anything,they are the same size. I have a 401M motor and 3 305s. The head ports are the same on the 401M,the only difference is the design of the 401 intake and the port for two cylinders are combined 305 Gaskets will work perfectly and not block anything. Dave
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, possibly you dont have M intake or heads, do you have any pictures?