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Engines
Glow Plugs
May 23, 2022
Like your plugs hot or cold? Long or short? Plug in here and learn what they all do.
Hotter plugs
Advances ignition timing
More power, especially at high RPM
Typically used on small-block engines
Can cause pre-ignition
Colder plugs
Delays ignition timing
Less power
Typically used on big-block engines
Longer plugs
Increases compression
Advances ignition timing
More power, especially at high RPM
Glow Plugs
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