18436572
It should be cast on the factory intake manifold.
All small block chevy's standard firing order is 18436572.
1,8,4,3,6,5,7,2 all small block and big block firing patterns are 1,8,4,3,6,5,7,2 for Chevy
The firing order on all small block Chevy engines is, 18436572 and the cylinders are numbered as following, driver side 1357 and pass side 2468
The firing order should be stamped on the engine block right on top in front of the carborator.
The firing order for the Pontiac 400 engine is that the small block powers the big block.
Firing order is the same as a small block Chevy 18436572 clock wise
There should be an engraving/mark on the top of the engine block that says what it is.
Some engine blocks have the firing order stamped close to the top front of the block, others do not. An online search will show the correct firing order for a specific engine.
the firing order for a small block Chevy 350 is 18436572
73 Chevy 350 firing order: 18436572 countercockwise
We need to know size engine you have.
1,8,4,3,6,5,7,2.