Engine Newbie to CJ7
   
 
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- 85 CJ7 4.2L 258 .040 over, T-5 trans, dana 300, dana 30 front 3.23 and lock right locker, rear amc 20 3.23 one piece axle shafts traclock 
 
 79 CJ7 304, th400 auto borgwarner 1389?? qudratrac stock rest unknown.
 
 89 YJ 4.2L 258, AX-15 5spd, NP231, dana 30 front, dana 35 rear with posi, gears unknown
 
 92 YJ 4.0, AX-15 5spd, np231, dana 30 front, dana 35 rear.
That's a 904 dead give away is the dip stick tube and the raised bump where the bell housing meets the main body.
The 727 is completely smooth and has a bump out for the dip stick tube not a simple 90⁰ bend.
Here's a fantastic write up about them
	
	
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			The 727 is completely smooth and has a bump out for the dip stick tube not a simple 90⁰ bend.
Here's a fantastic write up about them
Transmission .17287/" data-host="www.forbbodiesonly.com" data-pending="false">
		
			
				
					
						 
					
				
			
			
				
					
						
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				Your 'Guide' to the 727/904 transmission
Often I or anyone for that matter asks to find out what type of transmission they have in their old mopar.  There are hundreds, if not a thousand, of threads on this website identifying, discussing or assisting with this process, troubleshooting or repair.  Because of this large number of...
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