Hi Timo,
I am having the same question.
My engine is a 273 with a E-4 camshaft. Duration at 0.050" is 216° and at 0.020" 260°, RPM-Range is 2000-5500.
I will drive the engine in my 65 Valiant with a 904 transmission.
if I want to use the full power of the cam, do I have to use a performance...