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		| RE: If early 60s it's a plain 390, later a 428 or 361. | 
	 
		| By Rollie H. - 09/29/2002 1:31:47 PM; IP 199.183.169.218 | 
	 
		I checked between the cylinders with different drill bits and the largest size I can fit between them is 5/32. Of course there may be some build up in there so after it is all cleaned up it will likely be more like a 3/16 to 7/32 bit will fit. I absolutely can't force a 15/64 bit in there. There is no doubt that even after a clean up the results will be the same with the 15/64 drill bit.   I think he wants to sleeve just one cylinder to keep from having to change all eight pistons. That cylinder had a piston go bad and it scuffed the cylinder some. You can feel the damage with your fingernail, so it is time to bore it out not sleeve it. I think he is making a mistake since this will weaken the block in my opinion.   
  Thanks for the help and tips!  | 
	 
 
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