What’s the difference between the LT1 and its predecessor the L98?
There is a recent SAE paper that compares and contrasts the two engines. It discusses history, cooling, lubrication, breathing, ignition, etc. The name of the paper is “New Generation Small Block V8 Engine,” SAE paper 920673, by Anil Kulkarni of GM. It can be obtained from the SAE by calling 412-776-4841.