Quote:
Originally Posted by sxd45
The old Harley trucks didnt have the same 5.4 as the Lightning, it was a stock 5.4 with a supercharger, where as the lightning had some work done to it.
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That would be incorrect. The ecu tunes are slightly different between the two and the Lightning runs a 2.93" upper pully opposed to the 3.25" upper pulley on the HD. Besides that all internals are identical as the engines came off the same assembly line.