Hooking up gauges, what size adapter

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11-22-2007, 02:54 AM

playtoy

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Hooking up gauges, what size adapter

Does anyone know what size adapter I need to hook up my engine temp sensor to a set of 5.3 heads? Is it a 10mm or 12mm to 1/8" npt?

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11-22-2007, 05:39 AM

LS1MCSS

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I "think" it's 12MM, but don't bet the farm on it. I could be wrong.

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11-22-2007, 07:44 AM

LS1 SPEED

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We always drill and tap the top of the water pump. The sender can then be screwed directly in and it will be more accurate.

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11-22-2007, 11:10 AM

bczee

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It is 12mm.. I drilled my out head to 1/4"npt. But some of the manufactors are now making adapters for there gauge senders.

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