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Re: Quick, Easy question (Hopefully)
I've drilled and tapped an intake manifold for the original temp sensor. The big fat tap itself wasn't cheap ($35 I think) but it wasn't rocket science. It is a tapered thread so I'd check your depth with the sensor periodically as you tap it.
That said, I have no idea if drilling into the head is a good idea. Only ever done it on an intake.
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1970 GMC Sierra Grande Custom Camper - Built, not Bought
1969 Pontiac 2+2 427/390 4-speed Coupe
1969 Pontiac 2+2 427/390 4-speed Convertible
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