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			 Is the code CRR on this block 1970 only? Could this be a 1971 dated LS6? The ebay # is #120124977308 http://cgi.ebay.com/ebaymotors/ws/eBayIS...977308&rd=1,1  | 
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			#2  
			
			
			
			
			
		 
		
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			What car would this engine have been for? 
		
		
		
		
		
		
			
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	Bill O'Brien 1974 Jeep CJ5 - 304 V8, Edelbrock Intake, Holley 650, MSD Ignition, Patriot Headers  | 
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			#3  
			
			
			
			
			
		 
		
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			according to my info yes the CRR is only a 70 suffix not 71,he states the date code B 7 71,, the seller might be  mistaken on something I don't get it 
		
		
		
		
		
		
		
		
	
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			pictures tell the story anyone figure this out 
		
		
		
		
		
		
		
		
	
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			#5  
			
			
			
			
			
		 
		
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			If his "show" cars looked as rough as the exterior of this engine I would hate to see his non "show" cars. 
		
		
		
		
		
		
			
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	Dave ![]()  | 
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			#6  
			
			
			
			
			
		 
		
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			even the motor photos don't look correct , in the complete shot looks to have the high rise intake like the 163 , yet the intake shows the lowrise casting # 569,, go figure 
		
		
		
		
		
		
		
		
	
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			#7  
			
			
			
			
			
		 
		
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			I had a 72 396 with a 70 L78 code on the front pad last year. Consensus here was it was a marine engine, which I believe. This is probably the same case. The 163 intake was probably the one that came with the marine intake. The seller says the other(70-71 LS6) intake is also included. 
		
		
		
		
		
		
		
		
	
	Jason  | 
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			[ QUOTE ] 
		
		
		
		
		
		
			What car would this engine have been for? [/ QUOTE ] This motor is just a CE assembly. I had a casting date of 1972 with a CRR coded assembly. It happened to use the 1972 casting number block, but it had all the correct internals and was a T0422CRR pad stamping. 
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	2 1971 LS-6 Corvette coupes (Duntov's last stand)  | 
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			Ther were plenty of assembled engines sold over the counter in the early seventies that had codes . You could buy a complete LS-6 for No Money. They sold all of the engines that way. L-79's were like 370.00 for a complete longblock back then. There a lot more engines out there than You may think, That goes for all of them. 
		
		
		
		
		
		
		
		
	
	Jim  | 
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			Yep, that 'CRR' block stamping was used up until about 1972. Why they weren't stamped 'CE' like most other crate engines, I don't know. I currently have one of these 1972 CRR LS-6's in my '55 Chevy Gasser. It happens to be a '289' casting for the cylinder case but also has the closed chamber, rect. port cylinder heads and pancake aluminum intake manifold with all 1972 casting dates. 
		
		
		
		
		
		
			
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	1962 Biscayne O-21669 MKIV/M-22 1962 Bel Air Sport Coupe 409/1,000  | 
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