i read that the cranks are different the 170 was automatic,and the 225 is a three speed, i want to keep the auto matic... anyone know if it will be a straight swap or do i need to buy some parts?

What model year are both engines?

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Joshua

sorry it took so long to respond i gotsta go to the library too get online.


the 170 is a 1966, and the 225 is 70 something, i read that i'll need to get a bushing, but am not sure if i need to change bell housings or anything else. I'd like to keep the original trans in the 66.

Yep, you need the spacer bushing so the '66 torque converter is properly suppored and centered in the larger pilot hole of the later engine. Other than that and a little work to the exhaust down-pipe you'll be fine.

Where are you located? I'm looking for a 170 core to rebuild.

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Joshua

You'll need a 225 flexplate, spacer as joshie said. I just finshed doing a 77-225 auto into a 64 170 auto spot in a Valiant. I left the trans in the car. but many pull them togather. This site got me through it and all I had to fear was fear itself. Let me know if I can lend moral support.