Harmonic balancer
5 Answers
Possibly. Vibrations set up in the engine could cause accelerated wear. If the main pulley fell off you would lose the function of all the engine accessories.
beatupchevy answered 7 years ago
it should be o.k. if you drive it in a demolition derby , but not for daily use
If the balancer comes apart it possibly could damage the engine or related parts. Don't drive it, get it repaired.