If you have a 1952 3105 (1/2 ton) Panel truck
A 1954/55st 261 will bolt right up/in (these are not very easily found).
A 1955nd-1963 261 will need a few adaptations, depending on the year.
- maybe an adaptation/change in front motor mount
- water pump relocation for efficient/optimal cooling - use a 1948-52 truck water pump with a relocation plate.
Let's assume you find a 55nd-63 261, you would also need:
If you are now (or, you will stay) 6v, you will need to use your 1952 6v starter, 6v flywheel and complete clutch assembly/parts.
Use your 1952 clutch housing and transmission/torque-tube/rear-end.
If you are 12v (or changing to 12v), you would use the 12v 261 flywheel, starter and clutch assembly.
The carburetor linkage will have to be tinkered-with.
Other members will add and/or correct what I have posted.
(I have a 1959 and a 1960 261 on/in two of my 1954 trucks.)
