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As some of you know I'm building this 440 with Stealth heads and a Summit 6401 cam. We degreed the cam today and here's what we got.

Exh open 2 deg retarded
Exh close. 4 deg advanced

Int open 2 deg retarded
Int close 1 deg retarded

These are departures from spec. The crank sprocket has keyway options for 4 degree advance or retard. Are these differences worth worrying about for street car that will likely never see more than 4500 rpm?

I entered the differences into my desktop dyne and there was no more than a 5hp difference either way.

Thanks!

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Explain retarded in relation to Top Dead Center on both valve events please What is the duration (at .050 lift), lift and lobe seperation on that camshaft?