![]()  | 
	
		 
  
                 
		 
			
Pay Dues or become a Site Supporter
		
		 
	 | 
		
		
			
  | 
	|||||||
| Transmissions and Rear Ends Three on the tree or four in the floor? Shift it all here. | 
![]()  | 
	
	
| 
		 | 
	Thread Tools | 
| 
		 
			 
			#1  
			
			
			
			
			
		 
		
	 | 
|||
		
		
  | 
|||
| 
		
	
		
		
			
			 
			
			I have a truck that has the sm318 3sp. I am thinking obout changing to sm420, is it a different bell housing? And will I need to change drive shaft. I quess I would need taller transmitton hump? Bob
		 
		
		
		
		
		
		
		
		
	
	 | 
| 
		 
			 
			#2  
			
			
			
			
			
		 
		
	 | 
||||
		
		
  | 
||||
| 
		
	
		
		
			
			 
				__________________ 
		
		
		
		
		
	
	1961 GMC Suburban 305A Overdrive 1962 GMC Utility 305D  | 
| 
		 
			 
			#3  
			
			
			
			
			
		 
		
	 | 
|||
		
		
  | 
|||
| 
		
	
		
		
			
			 
			
			Thanks for the link
		 
		
		
		
		
		
		
		
		
	
	 | 
![]()  | 
	
	
| Bookmarks | 
| Thread Tools | |
		
  | 
	
		 | 
			 
			Similar Threads
		 | 
	||||
| Thread | Thread Starter | Forum | Replies | Last Post | 
| 401M bell housing question | Archiver | Previous Forum Posts | 4 | September 21st, 2011 04:27 AM | 
| Re: Looking for a bell housing | Archiver | Previous Forum Posts | 0 | October 2nd, 2009 02:49 AM | 
| RE: [6066 GMC] Question about 478 bell housing | Archiver | Previous Forum Posts | 0 | March 20th, 2008 02:53 AM | 
| Re: Question about 478 bell housing | Archiver | Previous Forum Posts | 0 | March 20th, 2008 02:46 AM | 
| Question about 478 bell housing | Archiver | Previous Forum Posts | 0 | March 20th, 2008 02:10 AM |