The 470s are good motors,,but if you do a search on the net you will find that theses motors get a bad rap....they have there problems but once you get the bugs out they are great ...some of the problems are
to small heat exchanger 3" should be 4"
stator charging system w/ water cooled reg. ''' change it out to a reg. alt.
starter take a beatting because of the big pistons... Keep all wireing clean
seals on the water cir. pump and cam ......a must change or oil will get in the oil
And that the bottom end is alm. and the head is cast Don't le the motor overheat or you will blow a head gasket
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