Richard,
I don't have a copy of the ECTA rules, but, the SCTA rule book states
that "XO class consists of overhead valve (OHV) and flathead inline and
flathead V8 (except Ford and Mercury) and V12 engines, 1959 or earlier
design, up to 325 cubic inches displacement. Examples include Chevrolet, GMC,
Hudson, Packard, Buick, Lincoln and Cadillac. Foreign engines are not
included". The bold type indicates changes to the 1999 rules.
Your reading of the ECTA rule left out the mention of "overhead valve
(OHV) and flathead inline".
If those words were omitted in the SCTA rules, todays SBC engines
plus a whole host of 325-375 ci power plants could be run in the class.
The intention of the founding fathers was supposedly to separate the
pre 1959 4 main bearing inline sixes and eights as well as the early Nash and
a host of other "older design" engines from the power plants that evolved
during the mid to late 1950's.
By the SCTA rules a 354 Chrysler Hemi would run in "C" engine class.
If you chose to run an Ardun OHV converted Flathead Ford V8, the father of
the Chrysler Hemi, you would run in the XXF (XF engine with an OHV
conversion) class as long as you stayed below 325 ci.
The 325 ci limit on the XF and XXF engines is, for all practical
purposes, a moot point since it is nearly impossible to get a Flathead Ford
V8 over 325 and still run water in the
block..................................Ardun Doug King
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