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| Mac Winter 76XB351GS | 
				
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							Gday,
 
				I just pulled my engine apart because of a blown head gasket. I noticed the pistons have a "20" stamped in the centre, does this mean that they are 20thou oversize? If so what approx displacement would the 351c now have? Thanks 
 _________________ 76XBGS, 383c, custom crow cam, 4V p&p heads, Isky SS Valve+springs, extractors, 2.5"twins, MSD Ignition, Edelbrock intake, Forged bottom end, Barry Grant 750DP, thermo, discs, toploader, Holley fuel pump, SUPERCHARGED!  | 
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| Andrew J | 
				
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							sounds like it.  i get about 356c i think?  based on a 3 inch piston?						
						
						
								
							 
				
 _________________ The problem with America is stupidity. I'm not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself?
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| Macca | 
				
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							Do a search for a online calulator, there is a few out there.   
				From memory 30thou is about 357. Cleveland pistons are standard at 4" not 3" 
 _________________ 93 Ford Maverick LWB automatic petrol guzzler (gets stuck where Deli doesn't, big pumpkins   | 
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| Andrew J | 
				
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							haha, so they are, 354.5cubes then						
						
						
								
							 
				
 _________________ The problem with America is stupidity. I'm not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself?
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