Can\'t stop the pinging (AND THE FIX) I've got an 87 V3500, 454, Turbo 400. It is pinging under acceleration. No codes, I plugged in my Scan tool and the computer and all sensors are operating within their parameters. I put in a tank of Supreme, no change. The cap, rotor and plugs are new. I've checked timing (disconnected the "brown" wire first). Any ideas?? Thanks, Eric M. THE FIX 9/22/03 On 454s, the harmonic balancer has a band of rubber between the inner portion and the outer ring with the timing mark. As the balancer gets older, that rubber deteriorates, allowing the outer ring to move from it's original location, thus, showing the incorrect timing when using a timing light. I picked up a new balancer from LMC, bolted it up and found that the timing was 12 degrees off. Now it runs fine while set at the factory 4 degrees BTDC and no pinging. I wanted to post for others doing searches for pinging 454s. Who'd a guessed that was the problem /forums/images/graemlins/confused.gif Eric M.