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Review on πŸ”Œ ACDelco Professional 41-629 Conventional Spark Plug (Individual Unit) by Marco Wilson

Revainrating 5 out of 5

Standard replacement 1987 Corvette with L98

Installs these on my 1987 Corvette c4 with L98. These are stock plugs and really get your car idling and accelerating just fine again when you have trouble. For me the spark plugs weren't properly spaced, so make sure they're 0.035 spaced if you have a mostly stock L98. Also, be sure to purchase anti-seize lubricant and cap the threads (without touching the electrode) to keep the spark plug from sticking to the engine threads. Makes them safer in the future and easier to remove otherwise you may have to rethread the motor.

Pros
  • Spark plugs and wires
Cons
  • weak