Well I came up with the The number of turns head thread Test.
Basically there is a seat in the head for the wider portion of the plugs just above the threads to stop on. This seat, notch, ledge, whatever... read more

Mustang FeedsIf you need a quick release hub with a horn this is for you. Here's how to install IDIDIT's Push-To-Connect Quick Release Steering Wheel Hub.
It was a record-breaking weekend for Pro Stock. Dallas Glenn reset the national record and led the quickest Pro Stock field ever.
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ARP is adding bonus award money at California Hot Reunion. The company is kicking in an extra $12,500 to the long standing event.
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It was a big day for the Pawuk family at Dallas. Both Mark and Kyle scored national event wins at the 2026 NHRA Texas Fallnationals.
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The NHRA Texas FallNationals was one of the best events of the 2026 season. Brown, Todd, Glenn, and Smith all scored huge Countdown wins.
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From Pro Stock To Top Fuel: Aaron Stanfield Takes A Major Step Toward Nitro Racing
Aaron Stanfield is well on his way to becoming a Top Fuel racer, Stanfield earned his Top Fuel license in Leah Pruett's dragster.
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