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| gunna | 
				
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							i have both 4 speed sitting there just wondered if they have different gear ratios ,because i can just take the bell housing of and fit the better suited box for my 3.9 ratio diff						
						
						
												 
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| SWC | 
				
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					 {USERNAME} wrote: i have both 4 speed sitting there just wondered if they have different gear ratios ,because i can just take the bell housing of and fit the better suited box for my 3.9 ratio diff AU V8 & 6 cyl Autos are the same ratio. I would venture a guess that the BA 4 speed autos are the same.  | 
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| Disco Frank | 
				
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							the ratios may be the same... 
				but i would bet the input shafts are different the torque converters could be as well! 
 _________________ RIP SCOTT  | 
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| gunna | 
				
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							the out put shafts are different that i know .						
						
						
												 
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| Ballast | 
				
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							Output is the same. 
				My 3V and 4 speed were moved into a station wagon, using the original 6cyl wagon tailshaft. 
 _________________ Remember kids, the more pages of crap in your build thread, the bigger your e-penis is  | 
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| gunna | 
				
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					 {USERNAME} wrote: Output is the same. My 3V and 4 speed were moved into a station wagon, using the original 6cyl wagon tailshaft. awesome will not need a new tail shaft then .thanks mate  | 
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| gunna | 
				
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					 {USERNAME} wrote: {USERNAME} wrote: Output is the same. My 3V and 4 speed were moved into a station wagon, using the original 6cyl wagon tailshaft. awesome will not need a new tail shaft then .thanks mate when you changed motor over did you change only the engine bay harness ?  | 
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| Ballast | 
				
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							We just swapped the engine bay loom, that being said, you can't. There is a difference in the looms. It has someone to do with the BBM actuator. The 6 cyl had it, the donor V8 did not. In my case, the extra wires are still in the car, just tucked under the PCM.						
						
						
								
							 
				
 _________________ Remember kids, the more pages of crap in your build thread, the bigger your e-penis is  | 
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| gunna | 
				
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							more work thats all i needed .so best way take the dash out ?						
						
						
												 
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