I have a 1/2npt hole in the aluminum cylinder heads I would love to be able to plug thst hole with a temperature switch and use that to cut the block heater off above say around 100°F. Put one in each head to control each heater and I would be all set.
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 4th Gen disc brake fbody rear end.