Re: drive shaft will not turn. 1955 5.5.

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July 7, 2016 at 9:43 pm #39819
reivertom
Participant

    US Member

    I agree with Steve AW. If it is a Sierra impeller, check and make sure it’s not too thick. I remember a while back fellows complaining about this. If they are too thick, when you tighten down the pump housing, it locks up the drive shaft. Then if it isn’t the impeller, go on to other probable causes mentioned here.