Ok. here is the situation. When i got the 84 z28 with the t-5 in it the speedometer did not work properly. it would bounce around a bit and you never knew exactly how fast you were going. So I bought a digital dash setup through nordskog (sp?). Anyhow I installed that and got the Speedometer VSS Convertion for it, and it still bounced. Next i replaced the driven gear (as the drive gear was fine) Still bounces.. Does ANYONE at all know what could be causeing the thing to not report the accurate speed? There is no mechanical speedo cable connected anymore ( two wires in a loom now). Any ideas on posibilities would be very helpful. thanx.