I have a chevy 350 CI bored and stroked to a 383. It has pre ignition and the plugs look fouled. What would the cause be? Any thoughts on a hotter/colder spark plug?

Asked by May 20, 2016 at 02:12 PM about the 1955 Chevrolet Bel Air Base

Question type: Maintenance & Repair

Not running at max performmance

1 Answer

92,605

Are the plugs oil or fuel fouled? Did you have the distributor advance recurved to match the engine?

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