I just put this 400 m in my 78 and I dont understand... it seems like there is so much vaccume that the tranny dosent want to shift. It will only shift right if I am really really easy on it.. I took this motor right out of another 78 and everything is Identical... I really do not understand.. would my power valve have anything to do with it? Its not hooked up but my 79 is a built 302 and its not hooked up and i drive it daily.... any help??

 

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