Have 1957 GMC with 347 single v belt pulley on water pump and harmonic balancer.I installed power steering box to outside of frame.Now I want to go with dual v pulleys on water pump and harmonic balancer.I don't have a clue what will fit. Thanks to anyone that can help me.
Thanks Tom,I guess your saying 389 harmonic balancer fits 347. If it does this is the information I'm looking for.Is the bolt holding balancer left or right thread.Oh yes find answers then parts life is good.
Oh yes another bridge to cross.I've already switched from generator to alternator so I have leeway there. I think if I get pulleys and harmonic balancer off same 389 it'll fit my 347.If Pontiac didn't make different length water pumps.Tom do you know if someone sells thjs new?Thanks for ya help Tom