>the 251C 2v never had anywhere near
>that output; rather it was more like 200-205hp at the
>flywheel.

OK, I'm not trying to start an argument but the figures I had on the 2V hp came from a manual I have for the XA, XB and XC Falcons. It states that the 2V 351 Cleveland engine from the XA and XB's had 250 hp @ 4600rpm. The 2V 351 Cleveland fitted to the XC has 217 hp @ 4500 RPM by the manual. The 4V clevelands are rated a 300 hp @5400 rpm. Just for interest the XA and XB 302 had 230 hp @ 5000 and the XC 302 had 202 hp @ 4600. The vehicle manual is "Max Ellery'sd Vehicle Repai Manuals, FALCON/FAIRLANE, 1972 - 1979, XA, XB, XC" And the Hp ratings are on page 87.
I have heard that the XYGHTO (4V) dyno tested 380 -385 hp.

335C