I can't say much about stock cams even Corvette but I still have the timing sheet from the engine Ray and I raced at Bonneville. This is at .020 Tappet height and is grind 100-GTL276.
Intake opens 31.2 degrees BEFORE top dead center and closes 64.8 degrees ABDC.
It's the reason I HAD to notch the piston tops at zero deck height and would have even if at the stock height. Modern cam grinds open way before TDC.
