Hello again I bought a 1980 Chev 1 ton 4X4 Dually with a utility bed manuel tranz for a work Truck worked great for 6 years but gas was killing me.Here's the rough stuff I decided to swapp out the engine and put it in my 77 GMC which developed A knock after puting in a new tranz Wife let oil get low, pulled engine out of both trucks and went to put in 80 truck engine and forgot that 95 sb 350 create engine has balance weight on fly wheel so orderd the correct Fly wheel ( flex plate) and im getting a minor vibration Question? is the Harmonic balancer Diffrent from earlier 350 SB's
