all chevy V8 are the same 18436572 in a clockwise distributor rotation when viewed from the top.
The spark plug gap on 1977 Chevy truck 454 should be set at .045 inches. Spark plugs are preset at the factory and should need no adjustments prior to being installed.
.045"
All V8 Chevy plug gaps in 1977 was factory .045
Yes, beginning in 1977.
10w-40.
9:1.
4, to 6 degrees advanced, or BTDC.
Mounted on the front side of the engine block.
Won't fire as in no spark? Replace the ingition module inside the distributor.
A/C plug # R45TS and it gaps at 0.045 That is the factory plug.
45, for an iron intake, 35 for aluminum.
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