Its prob the same as the 2.8 diagram on this link: http://media.Photobucket.com/image/spark%20plug%20diagram%20chevy%203.0/roundcarly/chevy_firing_orders.jpg
The diagram.
this is the proper
What year and what engine?
You don't need a diagram to find spark plugs on this engine. Follow the plug wires and you will find the plugs.
Need to know what engine it has to answer that one.
with tools
6 cylinder engine is 0.045 and v-8 engine are 0.045
Depends on your engine: 1.0 liter 3-cylinder = 3 spark plugs, 1.3 liter 4-cylinder = 4 spark plugs
Need to no what size engine.
.035
I can't provide a diagram of a 1967 engine but here is one of a 1982 Chevy 250 L6 which will be the same. Firing order is 1-5-3-6-2-4 and the distributor rotates clockwise. I will post a link:
you can look in a haynes repair manual for it or contact your dealer