Use whatever oil you plan on using for the life of the engine keeping in mind the climate you live in. A 10W-30 or 5W-30 should be fine in an average climate.
about $2000
mortec.com
New? Rebuilt? Used?
Timing chains are designed to last the life of the engine and are replaced when the engine is rebuilt.
eBay offers a 454 Chevy Engine Rebuild Kit. It costs $379. It has all the necessary parts to rebuilt one's own engine. The engine was used in the 1970 Chevy Corvette LS5.
Timing chains are designed to last the life of the engine and are normally replaced when the engine is rebuilt.
The recommended oil type for a 1973 Chevy 454 engine is 10w-30. This provides a good balance of lubrication and viscosity.
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Timing chains should last the life of the engine and are normally replaced when the engine is rebuilt.
5w-30
Your question really makes no sense. Normally a timing chain will last the life of the engine as replaced when the engine is rebuilt.
10w-40.