Re: Big Four/460 Crankcase Differences

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March 30, 2016 at 4:52 am #34089
JAY T. WALLS
Participant

    Lifetime Member

    The crankcases can be identified as follows. The real 460 case has the brass freeze plug on the front of the case and above the carburetor. The big-4 and stormboat motor both have the same brass freeze plug and it’s on the front of the case but it is below the carburetor. The P500 case has no freeze plug. There are 4 crankcases possible and these are the ways to identify what they started life as.