To find the firing order for your 1978 Chevy truck with a 350 engine, you can:
* Check your owner's manual: The firing order should be listed in the manual.
* Look at the distributor cap: The firing order is often marked on the distributor cap.
* Consult a repair manual: A repair manual for your specific model year and engine will provide the firing order.
* Use a reliable online resource: Websites like Chilton or Haynes offer information about firing orders for different vehicles.
Please note: The firing order for a 350 engine in a 1978 Chevy truck is typically 1-8-4-3-6-5-7-2. However, it is always best to double-check using the sources mentioned above to ensure accuracy for your specific vehicle.