AutomaticMack Posted December 8, 2006 Share Posted December 8, 2006 Ok, heres a thought....... I have a crack in a 85' EM6-300 2 Valve, However I have a good 1978 ENDT675.Can I swap the turbo,injectors,and pump, onto the 675......... turning the ol' 675 into a 300 and would I need to change the cam? Or could I use the 675 as a donor block? The only difference I can see, on the 675 the block has screw in freeze plugs, and the exhaust manifold bolts are horizontal versus the diagonal. And the injector pump is the older style.P.S. I went to a local junk yard that used to have about 100 old Mack's inside..... Well wouldn't ya know they crushed them all The ol' R Model is slowly passing away, but still kick'n butts. Quote Link to comment https://www.bigmacktrucks.com/topic/1816-em6-300-from-endt675/ Share on other sites More sharing options...
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