In front of the water pump pulley on 1988 and later L98s resides a rather large 10lb steel disk, lovingly refered to as the “frisbee”. There has been much debate on the Forum about it’s purpose and the benefits/risks of removing it. During a Q & A session at Corvettes at Carlisle 2001, I posed […]

Background The \’85-\’89 L98 uses an Electronic Spark Control (ECS) module to listen to the Knock Sensor and report ping to the ECM (on \’90-\’96 Corvette motors the ECM listenes directly to the Knock Sensor). When the ECM detects knock counts it pulls timing till no knock is reported and then gradually increases timing to […]

Please note that this process was written by C5-TECH. Since there was not a tech tip for the C5 yet and the overwhelming response to a thread I posted regarding this issue…I thought you all could benefit from the pictures of my decarb. 1. Disconnect the pcv line by the throttle body and insert a […]