Quote Originally Posted by CDeeZ View Post
Dave, how exactly did you do the 2K PPM vs the 4K PPM???
The VSS information from JTR, http://www.jagsthatrun.com/SpeedSensors_Order.html shows early Pickup TBI ('7747 / ' 8747) is 2K PPM.

I've never tried to use the 4K PPM on a '427 PCM. The 4K PPM might work on the '427, but I don't have any personal experience doing so.

dave w