small block Chevrolet with HEI ignition is 45
depends on the ignition system you're using. Hei
1,8,4,3,6,5,7,2.
Need to know what year.
Owners manual, under the hood on a placard, or any parts store can provide this info. It will also depend on your ignition system, .035"
The ignition module on a 1988 Chevy Celebrity with 2.5 engine is on the side of the block beneath the intake manifold. You can simply follow the spark plug wires to it. As information the crankshaft position sensor is behind the ignition module.
1,8,4,3,6,5,7,2 same as the firing order
72-75 AC R44T 76-80 AC R45TS
It should be the same as the small block.18436572.
You need to be more specific on your question, add a little detail to it.
Ignition module bad.
No.