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On Sat, 20 Nov 2004 03:14:05 GMT, (John) wrote:
I would like to find out from somone who has these engines what they
are burning per hour on fuel. The mechanic that is going to install
these for me expects about 20 GPH at crusing speed.

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For estimation purposes assume a cruising horsepower of about 1/2 the
engines rating, e.g., a 400 hp engine will typically cruise at about
200 hp. From there assume 1 gph for every 10 hp actually used. If
the engines are rated at 400 hp, 20 gph, per engine, is pretty close
to the mark.