These are all good sources of information, specific to your truck:

1960-1966 Chev/GMC Truck Factory Assembly Instruction Manual
1960 Chevy Truck Shop Manual
1960 Silver Book
1960 CHEVROLET Trucks Accessories Installation Reference Manual
1960 CHEVROLET Truck Sales Data Book

1961 Chevy Truck Shop Manual – Supplement
1961 Silver Book
1961 CHEVROLET Trucks Accessories Installation Reference Manual
1961 CHEVROLET Truck Sales Data Book

1962 Chevy Truck Shop Manual – Supplement
1962 Silver Book
1962 CHEVROLET Trucks Accessories Installation Reference Manual
1962 CHEVROLET Truck Sales Data Book

1963 Chevy Truck Shop Manual
1963 Silver Book
1963 CHEVROLET Trucks Accessories Installation Reference Manual
1963 CHEVROLET Truck Sales Data Book

1964 Chevy Truck Shop Manual – Supplement
1964 Silver Book
1964 CHEVROLET Trucks Accessories Installation Reference Manual
1964 CHEVROLET Truck Sales Data Book

1965 Chevy Truck Shop Manual – Supplement
1965 Silver Book
1965 CHEVROLET Trucks Accessories Installation Reference Manual
1965 CHEVROLET Truck Sales Data Book

1966 Chevy Truck Shop Manual – Supplement
1966 Silver Book
1966 CHEVROLET Trucks Accessories Installation Reference Manual
1966 CHEVROLET Truck Sales Data Book

Chiltons & Haynes manuals are very general, when it comes to the specifics of the '60-'66 Chevy/GMC trucks, Panels & Suburbans.