Swapping pre 74 slant six engine to 75 + engine

Jim 270 said

Hi all I'm wondering what issues I will have swapping a 68 slant six to 75+year engine. I haven't checked the date code for the new engine yet but it was to good to pass on. Reason for changing is I need to do some work on the the original six and take in the season driving the car while I have the original worked on. Any and all info would be greatly appreciated. Thank in advance for any help provided. Jim

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As long as the engine is for sure a 1968 engine you will have no issues at all. Anything that you might need to swap would be on the old engine. If the engine is a 67 or older, you will have an issue. The hole in the end of the crank (for the converter pilot) got larger in 1968 (smaller in 67). If the old engine has the small pilot, you would need to get an adapter bushing to go in the end of the crank of the 1975 engine.