autolite spark plug gap

ja1919 said:

What should i gap them too??..some people cant take a minute to write a complete sentence..thanks

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You should gap them to 0.054"

The idea is for N/A applications to open the gap up as large as the ignition will handle before you start expierencing misfire. With the 5.0's igntion, 0.052-0.056 is the range. People usually split the middle and call it 0.054".

With aftermarket ignitions you can increase gap to about 0.060"

Booster or nitrous applications require a smaller gap around 0.035"


This applies to 87+ Mustangs.

Pre-87 had weaker ignitions and different heads therefore some models gapped at 0.045". Some service manuals incorrectly state the 0.045" gap as the gap for all 79-93 Mustangs, so keep in mind that that is wrong.

Enough information??