Good question Kurt. The clamps have to be able o handle the diameter of the cable and the amperage of the current draw.

Good clamps are expensive. Here is a set where both ratings are given. Here is another, at a higher price.

Tim
1954Advance-Design.com
1954 3106 Carryall Suburban
1954 3104 5-window pickup w/Hydra-Matic
The 216 and early 235 engines are not "splash oilers" -- this is a splash oiler.