Bit of backstory, my buddy bless his ambitious heart had this 1972 IH, the trans took a shit, he got frustrated and was talked into altering the backbone to accommodate an evo engine. So he cuts off the backbone, which he no longer has and installs a very solid piece of tubing to allow evo fitment. I acquire this frame from him later on, and have now come to a point of deciding what to do with it. I really have no desire to throw an evo in it, I have a 77’ engine sitting around however. It would seem like quite a waste to find another IH backbone and cut it off to replace this one. Would it be feasible to install the 77’ engine and weld a new top motor mount into place? I know the 77’ oil pump is a fitment issue for older frames, or so I’ve heard. I guess just looking for some thoughts, thank you
72’ Ironhead frame engine fitment issues
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Some info on the older Ironhead frames that may be of interest:
OSKRG Research/Restoration Bulletin #1, REV.5
1952-'72 K & XL Frame Model Year
Determination Flow Chart:
If buildin' old school choppers was easy, anyone could do it... ain't nobody said it's gonna be easy...Comment
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im not a expert on ih sportys but a top motor mount is easily fabbed and welded on. the oil pump clearance could be challenging but nothing you cant figure out.Comment
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