Wilf,
Another thing to check would be the tachometer. In all the cars I've had only 1 was acurate. A good test set or digital tach may find you are actually at 3,000 rpm instead of 2,600. Most needles are dampended so the needle doesn't bounce, this also makes the tach slower to react.I use a msd shift light as it is instant compared to my autometer tach that is 400 rpm slower at 6,000 rpm.
Perry.
