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				2.5 & 2.7 differences
			 
			
			What are the differences in the 2.5 and 2.7 engines? What parts will interchange etc. 
		
	
		
	
			
				The search function won't recognize 2.5 or 2.7 Thanks, D 
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	Donnie Currently Porsche-less.....  
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			Join Date: Jan 2007 
				
				
				
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			The 2.7 I believe uses a different water pump. The impeller is larger and will not work on a 2.5.
		 
		
	
		
	
			
			
		
		
		
		
		
		
		
	
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			 That Guy 
			
			
		
			
				
			
			
								
		
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			Cylinder head has different water passages which only line up with the 2.7L block and 3.0L blocks. Cylinder head has larger intake valves aswell as oval intake ports.
		 
		
	
		
	
			
			
				
					
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	Jon 1988 Granite Green 911 3.4L 2005 Arctic Silver 996 GT3 Past worth mentioning - 1987 924S, 1987 944, 1988 944T with 5.7L LS1  | 
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