destroyer your right on about the heads.It's just a water jacket.When I said it'll scream  Yes out of gear but in the water.The prop spins freely by hand and the prop size ie 13and3/4x17.I've tryed to rase the trim up it don't seem to make much differance.I't almost seems to me to I'm not gettin the high seepd circut between the carbs and distributor
		 
		
		
		
		
		
		
		
		
	
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