Speed, your '52 will probably have a 216 cubic inch Babbit-bearing engine. Some of the regulars here have a wealth of knowledge on options and original-equipment information. I've got several old manuals from Motor Magazine, covering automotive applications from 1940 through 1971, and I'm sure the trucks share some of the same equipment and specifications as the cars. Your engine size will be stamped on a machined pad near the distributor, and there are several casting numbers on the block and head to help identify exactly what you have. You're right, this is a great site!
Jerry


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