I think I'll add mu $.02 even though it's not really needed....
I think most of have forgotten the need to warm-up a cold engine. With today's computer-controlled, fuel-injected engines, we've become used to firing-up and ice-old engine, dropping the gearshift into 'Drive' and blasting down the road without a bit of hesitation.
In addition to an old in-line Chevy engine, I also fool around with antique farm tractors and fly airplanes. My 1937 Farmall F-20 needs a good 10 minute warm-up on a SUMMER day before it's happy working under a load, and have you ever seen the warm-up time required on a radial aircraft engine?
We're working with old technology here, folks, and, as mentioned, adding a performance cam to a carburatted engine only makes it worse.
