Just an added note that the 1959 Chevy Truck Shop Manual Supplement shows two changes to Kevin's info.

Mains 100-110 ft lb

Exhaust valves .018 hot

There is a 1960 Chevy Truck Shop Manual, but I don't have a copy nor could I find anything in our online sources. The 1961 Chevy Truck Shop Manual Supplement says follow the specs in the 1960 manual.
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~ Dan
1951 Chevy 3 window 3100
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"My Grandpa Carl's Truck and How it Became Mine"
1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver)
US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)