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 FeedsThe Idle Air Control value is an important setting in an EFI system. Here's how to set the IAC for a Holley EFI system.
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Big money was on the line at Byron Dragway. Here are the winners that brought home the cash from the Autoland Door Car Challenge.
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The first IHRA Triple Crown race took a hit from Mother Nature. The Maple Grove event has been postponed due to heavy rain.
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Shayne Johnson's 1970 Nova is a work of art. This 2,700 horsepower race car just happens to have the looks of a show car.
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The IHRA is going to be looking for a new President. Leah Martin announced that she's parted ways with the sanctioning body on Monday.
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Recent Technical Articles
IHRA Names Dustin Farthing President As Organization Accelerates Motorsports Expansio
The IHRA has named Dustin Farthing as its new president. Farthing has an extensive background in the motorsports industry.
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