[Cliff R]

One thing I've tested that most folks haven't is moving cams around then street testing, followed by track testing.

Another "myth" about advancing cams is "making more low end torque". You may see of "feel" a shift in power but may not make as much power anywhere as before the move. When I advanced the cam in my first 455 from 109ICL to 107ICL it KILLED it at the track at every point on the run including 60' time. I also moved it to 111ICL, and on up to 113ICL.

It was a TURD at 107 and again at 113, if you went by the track times, but superficially "felt" pretty peppy at 107ICL and made a little tiny bit more vacuum at idle.. Remarkably the car ran almost the same at 109 and 111ICL, just fuzz-nut quicker in 60' at 109 than 111.

In any case I would NEVER just advance a cam just to improve low end power, street manners or compensating for chain stretch, or following random advice on the NET from someone who probably Googled up their information instead of actually trying it out.......and, IF your chain is going to stretch out that much, buy a better timing set......FWIW.........