
 Originally Posted by 
wagoo
					 
				 
				4x4 Motors in Blackburn Melbourne were selling adaptors and doing Valiant conversions in the the mid 1970's to early 80s. The adaptors were made by a mate of mine, Arnold Taylor, who may still have the casting pattern, but with respect, anyone contemplating fitting either a slant or hemi engine to any series Landrover gearbox is asking for a mountain of grief. They are simply not up to it.The bellhousing bolt pattern on valiant engines will bolt up to the Dodge truck 4speed New Process 435 gearbox.Some of these have a 10 spline rear output shaft (mainshaft) the same pattern as the LandRover,though slightly larger outside diameter and base diameter of the splines. The Landy T/case input gear gets the splined hole machined out slightly on a lathe, and the truck mainshaft has the output spline ground down slightly so that the 2 mate together.A transfercase to gearbox adaptor with an additional bearing that sits just behind the original gearbox mainshaft bearing is then made up. The additional bearing compensates for the lack of the Landy style tail bearing.
From memory the NP435 box is the same length as the Landy box, The t/case adaptor is about 12mm thick and the bell housing is close in length to the Landy bell and flywheel housing combined.
I have a similar gearbox behind my 2 1/4 litre engine, but mine is a Warner T98, commonly found in Ford and International trucks. My box including T/case adaptor is 36mm longer than standard LandRover.Either Fairey or Rocky mountain overdrives can be fitted in the normal way to these conversions if that's our thing.
Both these gearbox conversions are bulletproof set and forget affairs.
wagoo.
			
		 
	
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