noista taisi olla jossain virityskirjassa muuten oikeen erikseen mainitakin.
"Some of our friends in Detroit have gone abolutely wild with big ports. In 1969 Ford chasing the trans-am championship introduced the Boss 302 with inletports all of 2.5in tall and 1.75in wide. They must have realised their mistake, that you just can not get acceptable gas velocities through ports that big., by reducing inlet valve size from 2.23 to 2.19 in the next year. Same heads are used on the Boss 351 and they are sill useless, but they do have a very nice combustion chamber which almost makes up for the horrible big inlet ports.
On the Super Cobra Jet 429 Ford made a similar error but as the combustion chamber in this head has very little going for it, it is best to fit this motor with the standard small port 429 heads, having Super Cobra Jet 2.25 inlet and 1.75 exhaust valves."
Joku ford homma ilmeisesti ollu normi autoissakin eikä vaan trans am champpionshipissä.
