Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. | 
	
		
			
  | 
	|||||||
| Register | Album Gallery | Thread Gallery | FAQ | Community | Calendar | Become a Paid Member | Today's Posts | Search | 
 
 | 
	
	
| 
		 | 
	Thread Tools | Display Modes | 
| 
		 
			 
			#1  
			
			
			
			
			
		 
		
	 | 
|||
		
		
  | 
|||
| 
		
	
		
		
			
			 
			
			Hi,  
		
		
		
		
		
		
			I have a 12 bolt rear end from a Chevelle or something similar that I am thinking I might want to part with. How do I identify it and figure out the date codes and stuff? ![]() Thanks, Joel 
				__________________ 
		
		
		
		
		
	
	Minnesota Hemi Guy  | 
| 
		 
			 
			#2  
			
			
			
			
			
		 
		
	 | 
||||
		
		
  | 
||||
| 
		
	
		
		
			
			 
			
			As well as what this diagram shows,relay all the letters and numbers lightly stamped in the passenger side axle tube usually facing the floor board,or front end. 
		
		
		
		
		
		
		
		
	
	The casting date & CON1 locations have been found to interchange between those locations shown,and also at the 4 O'clock & 8 O'clock positions. ![]() [i]Drawing Courtesy of Camaro Research Group)  | 
| 
		 
			 
			#3  
			
			
			
			
			
		 
		
	 | 
||||
		
		
  | 
||||
| 
		
	
		
		
			
			 
			
			Hi Joel, see if this helps. 
		
		
		
		
		
		
			General info..... http://www.chevellestuff.com/qd/gene..._axle_info.htm Axle codes.... http://www.chevellestuff.com/qd/axlecodes.htm Everything you ever wanted to know about Chevelle rear ends (well almost). ![]() 
				__________________ 
		
		
		
		
		
	
	...................... John Brown This isn't rocket surgery.....  | 
| 
		 
			 
			#4  
			
			
			
			
			
		 
		
	 | 
|||
		
		
  | 
|||
| 
		
	
		
		
			
			 
			
			Thanks guys!  
		
		
		
		
		
		
		
		
	
	  I'll be checking it out this weekend to see what it is.  | 
| 
		 
			 
			#5  
			
			
			
			
			
		 
		
	 | 
||||
		
		
  | 
||||
| 
		
	
		
		
			
			 
			
			Good info Joe Brown.  Thx 
		
		
		
		
		
		
			
				__________________ 
		
		
		
		
		
	
	1965 Malibu SS Convertible 1967 Nova SS LS1 Sold! 1967 Nova SS LS9 800HP 1970 El Camino SS396 4/Sp  | 
| 
		 
			 
			#6  
			
			
			
			
			
		 
		
	 | 
|||
		
		
  | 
|||
| 
		
	
		
		
			
			 
			
			The first thing I look for is the taper on the tube behind the flange. Chevy uses press in bearings. B O P tubes are straight. Bolt in axels. 
		
		
		
		
		
		
		
		
	
	 | 
![]()  | 
	
	
		
  | 
	
		
  |