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			 Registered Member 
			
			
		
			
			
			Join Date: May 2000 
				Location: Ontario,Canada 
				
				
					Posts: 233
				 
				
				
				
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			 Ok I'm just curious as to what I should be shifting at with my current combo. I'm running a custom upper intake, F cam, 351W heads, long tubes, 3.73 gears. I have a girdle for the rocker arms, but not the bottom end, I am also running on the stock 89 bottom end. Also have custom chip with no rev limit. 
		
	
		
		
		
		
		
		
			I've been shifting at 5700RPM, but wondering if I should be going higher?? And on that how much higher could I go and not have the stock bottom end start throwing parts out the block?? Engine has 'bout 60K miles on it. 
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	1989 Mustang LX Notch 5.0L, T-5, 1969 351W heads, cut & welded stock plenum, F-303 cam, Mac 1 5/8 full length headers, Cat'd H-pipe, 3.73 gears, Underdrives, SSM lift bars, E-Fan, 3G Alt, Custom Chip, Autometer gauges, Weld Draglite wheels , M/T ET Street Radials Best 1/4: 13.33@101.53MPH  | 
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