There are several situations where a small- or big-block Chevy can use a locked-out distributor for ignition timing. Some race engine builders prefer a locked distributor because their engines do not ...

When dealing with boost, a stronger block is always a good plan, so this build started with a Donovan aluminum HC 400 block. Best of all this priority-main block tips the scales at a scant 100 pounds!

Around 1975, General Motors made a significant advancement in stock passenger ignition technology: the High Energy Ignition (HEI). One of its major features was installation simplicity. The coil was ...