From: montgonerydorotha@gmail.com 
  
 At serial number 356950 the engine exhaust valves were to changed to the 
 free 
 rotating type and the valve lifters were changed to the adjustable type. At 
 serial number 403489 a dust shield was added to the inside of the 
 distributor 
 to help extend the 
 life of the contact points. At serial 429792 the tractor hydraulic pump base 
 was changed from aluminum to cast iron. The engine block cylinder bores were 
 enlarged and the sleeves were changed at serial number 433578 to a cast iron 
 material with a .090" 
 wall thickness (piston size remained the same). The "8N-B" casting mark on 
 the 
 left rear of the block was then changed to "8N-C" and the star on each end 
 of 
 the serial number was changed to a diamond. Because Ford stopped supplying 
 the 
 steel sleeves, 
 many older engines were rebored at overhaul time to use the new cast iron 
 sleeves. The engine oil pan casting was beefed up to give it extra support 
 to 
 resist cracking from the strain of front loaders. 
  
 iron speed designer 901 crack 
 Download File https://byltly.com/2wHCUW 
  
  
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