Engine: Champ vs Lark 170 OHV

[landriopa]

I currently have a 61 Champ with a 170 OHV engine # IE26194. I am able to buy a 170 OHV that came out of a car engine # S247286. What are the differences between them, and/or what do I need to do to make this new engine work that may be different?

[StudeRich]

It appears that our Six Cylinder Engine Serial Number I.D. List here from the SDC Main Page Link, does not go beyond the 1960 Models for some reason.

So I did open my '59 to '64 Chassis Parts Catalog and look up your OHV Six Serial Number I.D.
S247286 is a 1962 Lark Engine Block.
You need to check on the Bottom, Right rear of the Block for a spin-on Full Flow Oil Filter because it MAY be a Late '62 with one.
If it is, it's a Good thing, but check for exhaust Head Pipe Clearance using a Full Size 1 Qt. Oil Filter Like a NAPA Gold FIL1049.

There is very little to No difference between the Two.
The most important thing will be all about the Clutch Housing, you will need to "Dial Indicate" the center line of your existing Housing to the same of the Crankshaft, of the "New" Car Engine.
The Truck Housing will be different whether the Trans. TYPE was a match or not.

[Ron Dame]

As StudeRich says. No difference, but you must dial inidcate the bellhousing to prevent transmission and/or flex plate problems.