Degreeing a camshaft for begginners

[kirkwoodken]

[quote="GLHS60"]The method I use to quickly determine if a cam is off, is to rotate the engine until the valves on say # 1 are on overlap, and check that the piston is at TDC. I just watch the valves visually and can stop at TDC every time if the cam is not off. Naturally, I'm not suggesting I could degree a cam this way, just checking to see if it's off a tooth or more.

Thanks
Randy[/quote]

X2! I've disregarded timing marks for years, preferring this "Down and Dirty" method of putting the cam in the right place. You don't need marks when you understand the relationship between TDC and split overlap.

[F-BIRD'88]

Both your cams checked just fine within 2 deg.
They are both fine. The cam is not the problem.
Move on. You have a vacuum leak or a ignition sys problem.