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		| "C Scratch Block"  Question | 
	 
		| By Rollie H. - 09/29/2002 12:15:45 AM; IP 199.183.169.164 | 
	 
		A friend of mine is rebuilding a 391 FT engine. He asked me to look it over to try and identify it's age and anything else I can. Well It has this c scratched into the back of the block and I remember reading some info on it and something to the effect of it being a better block for overboring. Is this reliable or just a hit or miss kind of thing?    This is a 1969 block and came in a silage cutter originally. It is now being used in a large heavy truck.  Any info and ideas are welcome.  Thanks!   | 
	 
 
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